// JavaScript Document
function setPageLocation() {
	var sel = document.getElementById("topten");
	if (sel) location.href=sel.value;
}

function setVariationImage(iList) {
	var src;
	var img = document.getElementById("VariationImg");
	src = "/includes/getvarimage.asp?id=" + String(iList.value);
	img.src = src;
}

function showLargeVariationImage() {
	var img = document.getElementById("VariationImg");
	src = img.src;
	
	if (src.indexOf("&lge") == -1) {
		src += "&lge=y";
	}
	else {
		src = src.substr(0, src.indexOf("&lge"));
	}
	
	img.src = src;
}

function setButton() {
	if (addedId!="") {
		swapImg(addedId, '', '<%= gsInBasketImg%>');
	}
}

function advsearch() {
	document.advsearchform.submit();
}

function invalidCaptcha() {
	document.getElementById("feedbackerr").style.display = "";
	document.getElementById("systheform").style.display = "";
	sysReloadCa();
}

function feedbackThanks() {
	document.getElementById("systhanks").innerHTML = "<b>Thank you for your feedback, it's much appreciated.</b>";
	document.getElementById("systheform").style.display="none";
	document.getElementById("feedbackerr").style.display="none";
}

function sysReloadCa() {
	document.getElementById('syscaimg').src='/includes/caimage.asp?' + Date();
}


function callBack(valid) {
	var tbl = document.getElementById("callbacktable");
	var spn = document.getElementById("callbackmessage");
	if (valid) {
		if (tbl && spn) {
			tbl.style.display="none";
			spn.innerHTML = "<p style='color:maroon;text-align:right;'>Thank you for your interest, we will contact you very soon</p>"
		}
	}
	else {
		if (tbl && spn) {
			tbl.style.display="";
			spn.innerHTML = "<p style='color:red;text-align:right;'>Please complete all fields marked with a red asterix <sup>*</sup></p>"
		}
	}	
}

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

function notAdded(sTxt) {
	alert(sTxt);
}

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 GetXmlHttpObject() {
	var xmlHttp=null;
	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest(); }
	catch (e) {
		// Internet Explorer
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP"); }
		catch (e) {
			try {
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP"); }
			catch (e) {
				alert("Sorry, your browser does not support AJAX.");
				xmlHttp=null; }
		}
	}
	return xmlHttp;
}

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 showAdsense() {
	var cl = document.getElementById("adsensediv").className;
	if (cl=="adsense") cl="showadsense"; else cl="adsense";
	document.getElementById("adsensediv").className=cl;
}

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()) 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 toggleStockRegister(sObj) {
	var obj = document.getElementById(sObj);
	if (obj) {
		if (obj.style.display=="")
			obj.style.display="none";
		else
			obj.style.display="";
	}
}

function submitAlertRegistration(sPid) {
	var ofrm = document.getElementById("basketframe");
	var oeml = document.getElementById("alertemail");
	if (ofrm && oeml) ofrm.src = '/stockregister.asp?pid=' + sPid + '&eml=' + oeml.value;
}


function changeImg(src) {
	var spc = document.getElementById("productimgcvr");
	var img = document.getElementById("productimg")
	
	img.src = src;
	spc.height = img.height;
	spc.width = img.width;
}


function changePImg(file, hgt, wdth) {
	var cel = document.getElementById("productimgcell");
	var spc = document.getElementById("productimgcvr");
	
	cel.style.backgroundImage = "url('/assets/products/" + file + "')";
	spc.height = hgt;
	spc.width = wdth;
}

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 (" + emailStr + ") 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;
}