// JavaScript Document

function isEmail(emailStr) {
	var checkTLD=1;
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	var emailPat=/^(.+)@(.+)$/;
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	var validChars="\[^\\s" + specialChars + "\]";
	var quotedUser="(\"[^\"]*\")";
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	var atom=validChars + '+';
	var word="(" + atom + "|" + quotedUser + ")";
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
	var matchArray=emailStr.match(emailPat);
	if (matchArray==null) {
		alert("Please check your email address in particular the @'s and .'s");
		return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];
	
	for (i=0; i<user.length; i++) {
		if (user.charCodeAt(i)>127) {
		alert("Please check your email address, the name before the '@' contains some invalid characters.");
		return false;
	   }
	}
	for (i=0; i<domain.length; i++) {
		if (domain.charCodeAt(i)>127) {
		alert("Please check your email address, the domain name contains some invalid characters.");
		return false;
	   }
	}
	
	if (user.match(userPat)==null) {
		alert("Please check your email address, the name before the '@' appears to be invalid.");
		return false;
	}
	
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
		for (var i=1;i<=4;i++) {
		if (IPArray[i]>255) {
		alert("Please check your email address, the destination IP address is invalid.");
		return false;
	   }
	}
	return true;
	}
	
	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++) {
	if (domArr[i].search(atomPat)==-1) {
		alert("Please check your email address, the domain name does not appear to be valid.");
		return false;
	   }
	}
	
	if (checkTLD && domArr[domArr.length-1].length!=2 && 
		domArr[domArr.length-1].search(knownDomsPat)==-1) {
		alert("Please check your email address, it should end in a well-known domain or two letter country.");
		return false;
	}
	
	if (len<2) {
		alert("Please check your email address, it is missing a hostname.");
		return false;
	}
	
	return true;
}

function emailOrWebCheck(str) {
	
	var emailPat=/\b[A-Z0-9._%-]+(.+)@(.+)[A-Z0-9.-]+(.+)\.[A-Z]{2,4}\b/i;
	var webPat=/\bwww(\W*)\.(\W*)[A-Z0-9.-]+(\W?)\.(\W?)[A-Z]{2,4}\b/i;
	var httpPat=/\bhttp(.*)(\W*)\:(\W*)\b/;
	
	var matchArray=str.match(emailPat);
	if (matchArray!=null) {
		alert("Please do not include email addresses in your advert.");
		return false;
	}

	matchArray=str.match(webPat);
	if (matchArray!=null) {
		alert("Please do not include website addresses in your advert.");
		return false;
	}

	matchArray=str.match(httpPat);
	if (matchArray!=null) {
		alert("Please do not include website addresses in your advert.");
		return false;
	}
	
	return true;
}

function checkSelected(iMax) {
	var selected = false;
	var selcount = 0;
	var inpfields = document.getElementsByTagName("input");
	for (var n=0;n<inpfields.length;n++) {
		if (inpfields[n].type=="checkbox") {
			if (inpfields[n].checked) {
				selected = true;
				selcount++;
			}
		}
	}
	if (selcount > iMax)
		document.getElementById("chargeapply").style.display="";
	else
		document.getElementById("chargeapply").style.display="none";
		
	document.getElementById("btnNext").disabled = !selected;
}

function addImg() {
	modalDialogShow("uploadimg.asp",500,380);
}


function confirmLogout() {
	if (confirm("Are you sure you want to log out?")) document.getElementById("frmlogout").submit();
}

function logout() {
	document.getElementById("glblFrmlogout").submit();
}

function updateBasket(iQty) {
		var bskt = document.getElementById("basketatag");
		basketitems = iQty;
		bskt.innerHTML = "(" + basketitems + ")";
}

function popup(img) {
	result = window.open("/viewimage.asp?img=" + img, "prodimg", "height=350,width=350,scrollbars,resizable");
	var cr = String.fromCharCode(13);
	if (result == null) alert("You browser is currently blocking Popups." + cr + cr + "Please change your settings to allow popups on this site." + cr + "Alternatively just click on 'more details' to view the images.");
}

function sImgR() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function loadImg() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=loadImg.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function swapImg() { //v3.0
  var i,j=0,x,a=swapImg.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function writeIn(pre, dom1, ext) {
	var lt = String.fromCharCode(60);
	var gt = String.fromCharCode(62);
	var at = String.fromCharCode(64);
	var qt = String.fromCharCode(34);
	var eq = String.fromCharCode(61);
	
	var act1 = String.fromCharCode(109) + "a";
	var act2 = "i" + String.fromCharCode(108);
	var act3 = "to";
	var act4 = String.fromCharCode(58);
	
	var lnk1 = lt + String.fromCharCode(97) + " " + String.fromCharCode(104) + String.fromCharCode(114) + String.fromCharCode(101) + String.fromCharCode(102) + eq + qt + act1 + act2 + act3 + act4;
	var lnk2 = lt + String.fromCharCode(47) + String.fromCharCode(97) + gt;
	
	var ad = lnk1 + pre + at + dom1 + ext + qt + gt + pre + at + dom1 + ext + lnk2;
	var ol = document.getElementById("kont");
	ol.innerHTML = ad;
}

/*==============================================================================

    Routines written by John Gardner - 2003 - 2005

    See www.braemoor.co.uk/software for information about more freeware
    available.

/*==============================================================================

Routine to write a session cookie

    Parameters:
        cookieName        Cookie name
        cookieValue       Cookie Value
    
    Return value:
        true              Session cookie written successfullly
        false             Failed - persistent cookies are not enabled

   e.g. if (writeSessionCookie("pans","drizzle") then
           alert ("Session cookie written");
        else
           alert ("Sorry - Session cookies not enabled");
*/

function writeSessionCookie (cookieName, cookieValue) {
  if (testSessionCookie()) {
    document.cookie = escape(cookieName) + "=" + escape(cookieValue) + "; path=/";
    return true;
  }
  else return false;
}

/*==============================================================================

Routine to get the current value of a cookie

    Parameters:
        cookieName        Cookie name
    
    Return value:
        false             Failed - no such cookie
        value             Value of the retrieved cookie

   e.g. if (!getCookieValue("pans") then  {
           cookieValue = getCoookieValue ("pans2);
        }
*/

function getCookieValue (cookieName) {
  var exp = new RegExp (escape(cookieName) + "=([^;]+)");
  if (exp.test (document.cookie + ";")) {
    exp.exec (document.cookie + ";");
    return unescape(RegExp.$1);
  }
  else return false;
}

/*==============================================================================

Routine to see if session cookies are enabled

    Parameters:
        None
    
    Return value:
        true              Session cookies are enabled
        false             Session cookies are not enabled

   e.g. if (testSessionCookie())
           alert ("Session coookies are enabled");
        else
           alert ("Session coookies are not enabled");
*/

function testSessionCookie () {
  document.cookie ="testSessionCookie=Enabled";
  if (getCookieValue ("testSessionCookie")=="Enabled")
    return true 
  else
    return false;
}

/*==============================================================================

Routine to see of persistent cookies are allowed:

    Parameters:
        None
    
    Return value:
        true              Session cookies are enabled
        false             Session cookies are not enabled

   e.g. if (testPersistentCookie()) then
           alert ("Persistent coookies are enabled");
        else
           alert ("Persistent coookies are not enabled");
*/

function testPersistentCookie () {
  writePersistentCookie ("testPersistentCookie", "Enabled", "minutes", 1);
  if (getCookieValue ("testPersistentCookie")=="Enabled")
    return true  
  else 
    return false;
}

/*==============================================================================

Routine to write a persistent cookie

    Parameters:
        CookieName        Cookie name
        CookieValue       Cookie Value
        periodType        "years","months","days","hours", "minutes"
        offset            Number of units specified in periodType
    
    Return value:
        true              Persistent cookie written successfullly
        false             Failed - persistent cookies are not enabled
    
    e.g. writePersistentCookie ("Session", id, "years", 1);
*/       

function writePersistentCookie (CookieName, CookieValue, periodType, offset) {

  var expireDate = new Date ();
  offset = offset / 1;
  
  var myPeriodType = periodType;
  switch (myPeriodType.toLowerCase()) {
    case "years":
      expireDate.setYear(expireDate.getFullYear()+offset);
      break;
    case "months":
      expireDate.setMonth(expireDate.getMonth()+offset);
      break;
    case "days":
      expireDate.setDate(expireDate.getDate()+offset);
      break;
    case "hours":
      expireDate.setHours(expireDate.getHours()+offset);
      break;
    case "minutes":
      expireDate.setMinutes(expireDate.getMinutes()+offset);
      break;
    default:
      alert ("Invalid periodType parameter for writePersistentCookie()");
      break;
  } 
  
  document.cookie = escape(CookieName ) + "=" + escape(CookieValue) + "; expires=" + expireDate.toGMTString() + "; path=/";
}  

/*==============================================================================

Routine to delete a persistent cookie

    Parameters:
        CookieName        Cookie name
    
    Return value:
        true              Persistent cookie marked for deletion
    
    e.g. deleteCookie ("Session");
*/    

function deleteCookie (cookieName) {

  if (getCookieValue (cookieName)) writePersistentCookie (cookieName,"Pending delete","years", -1);  
  return true;     
}

function IsNumeric(strString)
   //  check for valid numeric strings	
   {
   var strValidChars = "0123456789.-";
   var strChar;
   var blnResult = true;

   if (strString.length == 0) return false;

   //  test strString consists of valid characters listed above
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
   }

function toggleAdvSearch() {
	var btn = document.getElementById("advsearchbtn");
	if (document.getElementById("advsearch").style.display=="") {
		document.getElementById("advsearch").style.display="none";
		btn.value="Advanced Search";
	}
	else {
		document.getElementById("advsearch").style.display="";
		btn.value="Hide Advanced Search";
	}
}

function validateAdvert() {
	var msg = document.getElementById("addesc");
	var title = document.getElementById("adtitle");
	
	if (title.value=="") {
		alert("Please enter an advert title");
		title.focus();
		return false;
	}
	
	if (msg.value=="") {
		alert("Please enter some advert details");
		msg.focus();
		return false;
	}
	else {
		var desc = new String(msg.value);
		var newdesc = "";
		for (i=0;i<desc.length;i++) {
			iChar = desc.charCodeAt(i);
			sChar = desc.charAt(i);
			if ((iChar<32 || iChar>125) && iChar!=10 && iChar!=13) {
				newdesc += "";
			}
			else {
				newdesc += sChar;
			}
		}
		msg.value=newdesc;
	}
	
	if (!checkCaps(title)) {
		title.focus();
		return false;
	}

	if (!checkCaps(msg)) {
		msg.focus();
		return false;
	}
	
	if (!emailOrWebCheck(title.value)) return false;
	if (!emailOrWebCheck(msg.value)) return false;
	
	return true;
}

function checkCaps(oObj) {
	var val = new String(oObj.value), char, iasc;
	var sentence = new String(""), upperNext = true;
	var i, count=0, len=val.length, perc=0.5;
	
	for (i=0;i<len;i++) {
		char = val.charAt(i);
		iasc = val.charCodeAt(i);
		if (char==char.toUpperCase() &&  !(iasc >= 48 && iasc <= 57)) count++;
		if (char=="!" || char=="?" || char=="." || iasc==10 || iasc==13) upperNext=true;
		if ((iasc >= 65 && iasc <= 90) || (iasc >= 97 && iasc <= 122) || (iasc >= 48 && iasc <= 57)) {
			if (upperNext) {
				char= char.toUpperCase();
				upperNext = false;
			}
			else {
				char = char.toLowerCase();
			}
		}
		sentence = sentence + char;
	}
	
	if ((count/len) > perc) {
		// number of caps exceeds limit
		oObj.value = sentence;
		alert("Unfortunately you can't use excessive CAPITAL LETTERS in your advert" + String.fromCharCode(10) + "We have converted this for you so please check this before proceeding.");
		oObj.focus();
		return false;
	}
	else {
		return true;
	}
}

function loadDateRange(oMth, oYrs) {
	var newEle, dDate = new Date();
	var iYear = dDate.getFullYear();
	var contactform = document.getElementById("contactform");
	
	var aMonths = new Array(12);
	aMonths[0] = "January"; aMonths[1] = "February"; aMonths[2] = "March"; aMonths[3] = "April"; aMonths[4] = "May"; 
	aMonths[5] = "June"; aMonths[6] = "July"; aMonths[7] = "August"; aMonths[8] = "September"; aMonths[9] = "October"; 
	aMonths[10] = "November"; aMonths[11] = "December";
	
	var aDays = new Array(12);
	aDays[0] = 31; aDays[1] = 28; aDays[2] = 31; aDays[3] = 30; aDays[4] = 31; aDays[5] = 30; 
	aDays[6] = 31; aDays[7] = 31; aDays[8] = 30; aDays[9] = 31; aDays[10] = 30; aDays[11] = 31;

	for (i=0;i<12;i++) {
		newEle = document.createElement("OPTION"); newEle.text = aMonths[i]; newEle.value = i+1;
		oMth.options.add(newEle);
	}
	for (i=iYear;i<=iYear+1;i++) {
		newEle = document.createElement("OPTION"); newEle.text = i; newEle.value = i;
		oYrs.options.add(newEle);
	 }
}

function setDays(oMth, oDys, oYrs) {
	var aDays = new Array(12);
	aDays[0] = 31; aDays[1] = 28; aDays[2] = 31; aDays[3] = 30; aDays[4] = 31; aDays[5] = 30; 
	aDays[6] = 31; aDays[7] = 31; aDays[8] = 30; aDays[9] = 31; aDays[10] = 30; aDays[11] = 31;

	var iDays = aDays[oMth.value-1], newEle, iVal = 0;
	if (oMth.value == 2) {
		var iDiv = oYrs.value / 4; 
		if ((iDiv - Math.floor(iDiv)) == 0) iDays = 29;
	}
	if (oDys.length == 0) {
			for (i=0;i<iDays;i++) {
				newEle = document.createElement("OPTION"); newEle.text = i+1; newEle.value = i+1;
				oDys.options.add(newEle);
			}
		}
	else {
		iVal = oDys.value;
		if (oDys.options.length+1 > iDays) {
			for (i=oDys.options.length;i>=iDays;i--) {
				if (navigator.appName == "Microsoft Internet Explorer") {
					oDys.options.remove(i); }
				else {
					oDys.options.disabled = true; }
				}
			}
		else {
			if (oDys.options.length+1 <= iDays) {
				for (i=oDys.options.length;i<iDays;i++) {
					newEle = document.createElement("OPTION"); newEle.text = i+1; newEle.value = i+1;
					oDys.options.add(newEle);
				}
			}
			if (iVal > 0) {
				oDys.selectedIndex = (iVal>iDays)?iDays-1:iVal-1;
			}
		}
	}
}

function calc(filesize) {
	var factor = 1000, filetime, sFiletime ;
	var sizenum = 4;
	var kps = new Array(sizenum);
	kps[1] = "7";
	kps[2] = "8";
	kps[3] = "16";
	kps[4] = "50";
	
	var con = new Array(sizenum);
	con[1] = "56k modem:\t";
	con[2] = "64k ISDN:\t";
	con[3] = "128k ISDN:\t";
	con[4] = "Broadband:\t";
	
	sFiletime = ""
	for (x = 1; x <= sizenum; x++) {
		filetime = (factor * filesize) / kps[x];
		hourmod = filetime % 3600;
		hour = Math.floor(filetime / 3600);
		minute = Math.floor(hourmod / 60);
		second = Math.floor(filetime % 60);
		sFiletime += con[x]
		if (hour>0) sFiletime += String(hour) + " hrs, ";
		if (minute>0) sFiletime += String(minute) + " mins, ";
		sFiletime += String(second) + " secs\n\n";
	};
	return sFiletime;
}


function GetFileSizes(iCount)
{
	var Fo, sFile, oImgObj, oFile, iTotalSize, i, sSize = new String();
	
	try {Fo = new ActiveXObject("Scripting.FileSystemObject");}
	catch(err) {
	  txt="Before using this feature you need to change your internet settings.\n\n";
	  txt+="Click OK to open instructions on how to make the necessary changes\n";
	  txt+="or click Cancel to stop using this tool.\n\n";
	  if (confirm(txt))
	  	location.href="/faq.htm#sec";
		return;
	}
	
	iTotalSize = 0;
	
	for (i=1;i<=iCount;i++) {
		oImgObj = document.getElementById("image" + String(i));
		if (oImgObj) {
			sFile = oImgObj.value;
			if (sFile != "") {
				oFile = Fo.GetFile(sFile);
				if (oFile) iTotalSize += oFile.size;
			}
		}
	}
	iTotalSize = iTotalSize/(1024*1024);
	sSize = String(parseInt(iTotalSize));
	alert("The combined file sizes are approx. " + sSize +" MB, estimated upload times:\n\n" + calc(iTotalSize));
}

function checkFileExtension() {
	var sFile, sExt, iCount, oImgCount = docuemnt.getElementById("totalimages");
	if (oImgCount) {
		iCount = parseInt(oImgCount.value)
		for (i=1;i<=iCount;i++) {
			oImgObj = document.getElementById("image" + String(i));
			if (oImgObj) {
				sFile = oImgObj.value;
				if (sFile != "") {
					sExt = (sFile.lastIndexOf(".")>-1) ? sFile.slice(sFile.lastIndexOf(".")+1).toLowerCase() : "";
					alert(sExt);
					if (sExt != "jpg" && sExt != "jpeg" && sExt != "gif") 
						return false;
				}
			}
			else {
				alert("No oImgObj");
				return false;
			}
		}
	}
	else {
		alert("No ImgCount");
		return false;
	}
}