var cookiePath = '/';
var isPV = '1';


function getCookieVal( offset ){
	var endstr = document.cookie.indexOf ( ";", offset );

	if ( endstr == -1 ){
		endstr = document.cookie.length;
	}
	return unescape( document.cookie.substring( offset, endstr ) );
}


function getCookie( name )	{
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;

	while ( i < clen )	{
		var j = i + alen;

		if ( document.cookie.substring( i, j ) == arg )	{
			return getCookieVal ( j );
		}

		i = document.cookie.indexOf( " ", i ) + 1;

		if ( i == 0 )	{
			break;
		}
	}
	return '';
}


function setCookie( name, value, exp ){

	var dm = (document.domain);
	//alert(dm);
	if (dm.substring(0, 4) == 'www.') {
		dm = dm.substring(4, dm.length);
	}


	var expDate
	if (typeof(exp) == 'undefined'){
		expDate = new Date();
		expDate.setTime( expDate.getTime() + (1000*60*60*24*31) );
	}
	else {
		expDate = exp;
	}

	var expires = expDate
	var path = null;
	var domain = null;
	var secure = (document.location.toString().indexOf("https") == 0);


	var cookS = name + "=" + escape (value) +
	"; expires=" + expires.toGMTString()  +
	"; path=/" +
	"; domain=" + dm +
	"; secure;";

	var cookNS = name + "=" + escape (value) +
	"; expires=" + expires.toGMTString()  +
	"; path=/" +
	"; domain=" + dm ;

	document.cookie = cookS;
	document.cookie = cookNS;

}



function deleteCookie ( name ){
	var exp = new Date();
	exp.setTime ( exp.getTime() - 1 );  // This cookie is history
	setCookie(name, "", exp );
}


function testCookie() {
	var expDate = new Date();
	//valid one minute
	expDate.setTime( expDate.getTime() + ( 60 * 1000 ) );
	setCookie( "testCookie", "OK", expDate );
	testing = getCookie( "testCookie" );

	if ( testing == "OK" )	{
		return true;
	}
	else	{
		return false;
	}
}



function getGUIDfromQS(){



	if (document.location.search.toLowerCase().indexOf("dcsjumpguid") != -1){

		var start = document.location.search.toLowerCase().indexOf("dcsjumpguid") ;
		var value = document.location.search.substring(start);
		var end = value.indexOf('&');

		if (end == -1) {
			end = value.length;
		}
		value = value.substring(0,end);
		var keyval = value.split('=');

		return keyval[1];
	}
	return '';
}



function getStrippedDomain(dom) {

	dom = dom.toLowerCase();
	dom = dom.replace('http://', '');
	dom = dom.replace('www.', '');

	var endpoint  = dom.indexOf('/');

	if (endpoint == -1) {
		endpoint = dom.length;
	}

	return dom.substring(0,endpoint);
}


function getParsedReferrer(ref){

	ref = ref.toLowerCase();
	ref = ref.replace('http://', '');
	ref = ref.replace('www.', '');

	var uriEnd = ref.indexOf('/');
	var qsStart = ref.indexOf('?');


	if	(uriEnd == -1 && qsStart != -1) {
		uriEnd = qsStart;
	}

	if (uriEnd == -1) {
		uriEnd = ref.length;
	}

	var dom = ref.substring(0, uriEnd);

	var qs = '';
	if	(qsStart != -1){
		qs = ref.substring(qsStart, ref.length);
	}

	qs = parseSearchTerm(qs);
	ref = dom  + qs;
	ref = ref.substring(0,100)

	return ref;

}


function parseSearchTerm(qs) {

	qs = qs.replace(/\s+$/gi, "");
	qs = qs.replace(/^\s*/gi, "");
	qs = qs.replace('?', '');
	qs = qs.toLowerCase();

	if (qs.length != 0) {
		qs = '&' + qs;

		var endpoint = 0;
		var startpoint = 0;

		if (qs.indexOf('&q=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&q=') + 2;
		}
		if (qs.indexOf('&keywords=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&keywords=') + 9;
		}
		if (qs.indexOf('&keyword=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&keyword=') + 8;
		}
		if (qs.indexOf('&query=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&query=') + 6;
		}
		if (qs.indexOf('&kw=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&kw=') + 3;
		}
		if (qs.indexOf('&k=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&k=') + 2;
		}
		if (qs.indexOf('&p=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&p=') + 2;
		}
		if (qs.indexOf('&searchfor=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&searchfor=') + 10 ;
		}
		if (qs.indexOf('&s=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&s=') + 2;
		}
		if (qs.indexOf('&sub=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&sub=') + 4;
		}
		if (qs.indexOf('&va=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&va=') + 3;
		}
		if (qs.indexOf('&key=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&key=') + 4;
		}
		if (qs.indexOf('&kwd=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&kwd=') + 4;
		}
		if (qs.indexOf('&qry=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&qry=') + 4 ;
		}
		if (qs.indexOf('&search_term=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&search_term=') + 12;
		}
		if (qs.indexOf('&search=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&search=') + 7;
		}
		if (qs.indexOf('&searchterm=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&searchterm=') + 11 ;
		}
		if (qs.indexOf('&t=') != -1 && startpoint == 0) {
			startpoint = qs.indexOf('&t=') + 2;
		}


		if (startpoint != 0){
			//remove the added &
			//qs = qs.substring(1, qs.length-1)

			endpoint = qs.indexOf('&', startpoint + 1);

			if (endpoint == -1) {
				endpoint = qs.length;
			}

			qs = '?kw' + qs.substring(startpoint, endpoint);
		}
		else  {
			qs = '?' + qs;
		}
	}

	return qs.replace('?&', '?');

}


function setDCSJumpGUID() {

	var DCSJumpGUID = getGUIDfromQS();

	if (DCSJumpGUID.length > 0) {
		setCookie("DCSJumpGUID", DCSJumpGUID);
		deleteCookie("DCSReferrer");
	}
	else {
		//No PPC GUID, log natural search (if applicable)
		var dom = new String (document.location);
		dom = getStrippedDomain(dom);

		var ref = getParsedReferrer(document.referrer);

		if (ref.indexOf(dom) == -1){
			//referrer is not local domain; log the parsed referrer to cookie
			setCookie("DCSReferrer", ref);
		}
	}
}



function DCSGetGif(page, value, metric1, metric2, metric3, metric4){

	var secure = (document.location.toString().toLowerCase().indexOf("https") == 0);
	Md=document;
	ord=Math.random()*10000000000000000;
	var My;

	var re = /(\_)/g;
	var DCSJumpGUID = getCookie('DCSJumpGUID').replace(re, '~');
	var DCSReferrer = getCookie('DCSReferrer').replace(re, '~');
	var metLen = metric1.length + metric2.length + metric3.length + metric4.length;
	var refMaxSize = 140 - metLen

	if (refMaxSize < 0){
		refMaxSize = 0;
	}

	if (refMaxSize > DCSReferrer.length){
		refMaxSize = DCSReferrer.length;
	}

	DCSReferrer = DCSReferrer.substring(0, refMaxSize);


	if ( secure == true )
		{
		My = '<div id="DCSTrackingpixel" style="visibility:hidden;  height:1px; width:1px; z-index:999;"><img src="https://tracking.dc-storm.com/datacapture/_' + page + '_' + value + '_' + metric1 + '_' + metric2 + '_' + metric3 + '_' + metric4 + '_' + ord + '_' + isPV + '_' + DCSJumpGUID + '_' + DCSReferrer +  '_.gif" width="1" height="1" /></div>';
		}
	else
		{
		My = '<div id="DCSTrackingpixel" style="visibility:hidden ; height:1px; width:1px; z-index:999;"><img src="http://tracking.dc-storm.com/datacapture/_' + page + '_' + value + '_' + metric1 + '_' + metric2 + '_' + metric3 + '_' + metric4 + '_' + ord + '_' + isPV + '_' + DCSJumpGUID + '_' + DCSReferrer + '_.gif" width="1" height="1" /></div>';
		}
	Md.write(My);
	//alert(My);
	isPV = '0';
}


function DCSTracking(page, value, var1, var2, var3, var4) {

  // Blow out if the querystring contains 'DCSJumpGuid'
  // i.e. the call is to log a pageview but the page is a storm redirect
  // WHY? - Because the redirect has already counted this as a pageview

  if (document.location.search.toLowerCase().indexOf("dcsjumpguid") == -1){
	// check the structure of the function call
	if (typeof(var1)=="undefined" ) {
	value = '';
	var1 = '';
	var2 = '';
	var3 = '';
	var4 = '';
	}
	else if (typeof(var2)=="undefined"){
	var2 = '';
	var3 = '';
	var4 = '';
	}
	else if (typeof(var3)=="undefined"){
	var3 = '';
	var4 = '';
	}
	else if (typeof(var4)=="undefined"){
	var4 = '';
	}

	DCSGetGif(page, value, var1, var2, var3, var4);

  }

}


function DCSroundVal(value, decimals)
{ // rounds up to 2 decimal places
  return(
    parseFloat(value) != "NaN" && parseInt(decimals) != "NaN"
    ? (Math.round(value * Math.pow(10, decimals))) / Math.pow(10, decimals)
    : "NaN"
    );
}
function DCSfixValue(oldVal)
{ // removes all non-numeric chars excluding ALL full-stops
  var newVal = '';
  for (loop=1; loop<oldVal.length; loop++)
  { var thisChar = oldVal.substring(loop, loop+1);
    if ((thisChar < "0" || "9" < thisChar) && thisChar != '.')
    {}
    else
    {newVal += thisChar}
  }
  // Convert to Number
  newVal = Number(newVal);
  // Round to 2 Decimal Places
  newVal = DCSroundVal(newVal, 2);
  //and return the value...
  return newVal;
}

function DCProcessLog(page, product, value) {
	var secure;
	product = product + "";
	value = value + "";
	secure = (document.location.toString().toLowerCase().indexOf("https") == 0);
	Md=document;
	ord=Math.random()*10000000000000000;
	var My;

	if ( secure == true )
		{
		My = '<div id="dctrackingpixel" style="visibility: hidden; height:1px; width:1px; z-index:999;"><img src="https://tracking.dc-storm.com/datacapture/_' + page + '_' + value + '_' + product + '____' + ord + '_' + isPV  + '_.gif" width="1" height="1" /></div>';
		}
	else
		{
		My = '<div id="dctrackingpixel" style="visibility: hidden; height:1px; width:1px; z-index:999;"><img src="http://tracking.dc-storm.com/datacapture/_' + page + '_' + value + '_' + product + '____' + ord + '_' + isPV  + '_.gif" width="1" height="1"></div>';
		}
	isPV = '0';
	Md.write(My);
	//alert(My);
	}


function DCProcessClick(page, product, value) {

	if (product.length == 0) {
		product = '';
	}
	if (value.length == 0) {
		value = '';
	}

	var secure;
	secure = (document.location.toString().toLowerCase().indexOf("https") == 0);
	ord=Math.random()*10000000000000000;
	var x;
	if ( secure == true )
		{
		 x = 'https://tracking.dc-storm.com/DataCapture/_' + page + '_' + value + '_' + product + '____' + ord + '_' + isPV + '_.gif';
		}
	else
		{
		 x = 'http://tracking.dc-storm.com/DataCapture/_' + page + '_' + value + '_' + product + '____' + ord + '_' + isPV  + '_.gif';
		}
	isPV = '0';
	DCTrackingPx.src = x;
	var Start = new Date();
	while ((new Date() - Start) < 2500);
	}

setDCSJumpGUID();