/* Touch Clarity content request. http://www.touchclarity.com
 * Copyright (c) Touch Clarity Ltd 2001-2004. All rights reserved. Patent Pending.
 * Version 3.4
 */

function tc_configured() {
	tc_tag_version="3.4";
	tc_dtimeout=5000;
	tc_d_loc=window.location;
	tc_sent=0;
	if (typeof tc_server_url==tc_ud||typeof tc_site_id==tc_ud) return false;
	if (typeof tc_log_page==tc_ud||tc_log_page=="") tc_log_page="logging.html";
	tc_layer=(document.layers?1:0);
	tc_frame=(document.getElementById||document.all?1:0);
	tc_timeout=(typeof tc_timeout==tc_ud?tc_dtimeout:tc_timeout*1000);
	tc_encfn=(typeof encodeURIComponent!=tc_ud?encodeURIComponent:escape);
	tc_http="http"+(tc_d_loc.href.substring(0,6)=="https:"?"s":"")+"://";
	tc_server_url=tc_http+tc_server_url;
	tc_url=((typeof tc_page_alias!=tc_ud)?tc_page_alias:tc_d_loc.href);
	if (typeof tc_extra_info!=tc_ud) tc_url+=(tc_url.indexOf("?")>0?"&":"?")+tc_extra_info;
	tc_extra_info="";
	tc_products=(typeof tc_products==tc_ud?"":tc_products);
	tc_ccs = new Array();
	tc_referrer=(typeof tc_referrer!=tc_ud&&tc_referrer!=""&&tc_referrer!=null?tc_referrer:(typeof document.referrer==tc_ud?tc_ud:(document.referrer==null?"null":(document.referrer==""?"empty":document.referrer))));
	tc_time = new Date().getTime();
	return true;
}

function tc_log(alias, products, displayed) {
	if (!tc_logging_active) return;
	alias=tc_fixURL(alias);
	tc_image=new Image();
	tc_image.src=tc_get_log_URL("i",alias,tc_products,new Date().getTime(), displayed);
}

function tc_redirect(target,url,alias,winproperties,products,script) {
	if (typeof url==tc_ud||url=="") return;
	if (typeof script==tc_ud||script=="") script="tc_d_loc.href='"+url+"'";
	url=tc_fixURL(url);
	if (typeof alias==tc_ud) alias=url;
	alias=tc_fixURL(alias);
	if (typeof target==tc_ud||target==""||target=="_self") {
		if (tc_logging_active) {
			tc_timer=new Image();
			tc_timer.onload=function() { eval(script); clearTimeout(tc_timeout_id); }
			tc_timer.onerror=function() { eval(script); clearTimeout(tc_timeout_id); }
			tc_timer.src=tc_get_log_URL("i",alias,products,new Date().getTime());
			tc_timeout_id=setTimeout(script,tc_timeout);
		} else { eval(script); }
	} else if (typeof target=="object"&&target.document) {
		if (tc_logging_active) { tc_timer=new Image();tc_timer.src=tc_get_log_URL("i",alias,products); }
		target.location.href=url;
	} else { return tc_open_window(target,url,alias,winproperties,products); }
}

function tc_open_window(name,url,alias,winproperties,products) {
	if (typeof url==tc_ud||url=="") return false;
	if (tc_logging_active) { tc_timer=new Image();tc_timer.src=tc_get_log_URL("i",alias,products,new Date().getTime()); }
	if (typeof winproperties==tc_ud) return window.open(url,name);
	else { return window.open(url,name,winproperties) }
}

function tc_dltime() {
	if (!(document.getElementById||document.all)) return false;
	if (tc_logging_active&&(typeof tc_done!="undefined")&&tc_done&&!tc_sent) { setTimeout("tc_dltime()",1000);return false; }
	var sent=tc_sent;
	tc_image=new Image();
	tc_image.src=tc_get_log_URL("d");
	return sent;
}

function tc_get_log_URL(type,locn,products,time,displayed) {
	if (typeof type==tc_ud) type='i';
	var url=tc_server_url+"/"+type+"?siteID="+tc_site_id;
	if (type!="d") {
		url+="&ts="+(typeof time!=tc_ud?time:tc_time);
		var al = tc_isAlias(locn);
		if (typeof tc_containers!=tc_ud) for(cc in tc_containers) url+="&ccID="+tc_containers[cc];
		if (type=="c") url+="&log=no";
		if (al) url+="&alias=true";
		if ((typeof products!=tc_ud)&&products.length) url+="&prod="+tc_encfn(products);
		if (typeof displayed!=tc_ud) url+=displayed;
		if (locn==tc_ud) locn=tc_d_loc;
		locn=tc_encfn(locn);
		while (locn.length>1999-url.length) locn=locn.substring(0,locn.lastIndexOf(tc_encfn("&")));
		url+="&location="+locn;
		var dg=new Object();
		dg.tagv=tc_tag_version;
		dg.tz=0-(new Date().getTimezoneOffset());
		dg.r=tc_encfn(tc_referrer);
		if (al) dg.aliased=tc_encfn(tc_d_loc.href);
		dg.title=tc_encfn(document.title);
		if (screen) {dg.cd=screen.colorDepth;dg.ah=screen.availHeight;dg.aw=screen.availWidth;dg.sh=screen.height;dg.sw=screen.width;dg.pd=screen.pixelDepth;}
		for (var key in dg) { var param="&"+key+"="+dg[key]; if (url.length+param.length<2000) url+=param; else break; }
	} else {
		url+="&dlts="+tc_time+"&dl="+(new Date().getTime()-tc_time);
	}
	return url;
}

function tc_fixURL(url) {
	if (url=="") { return tc_d_loc.href }
	if ((url.substring(0,4)!='http')&&(url.substring(0,1)!="/")) { url=tc_d_loc.pathname.substring(0,tc_d_loc.pathname.lastIndexOf('/')+1)+url }
	if (url.substring(0,1)=="/") { url=tc_http+tc_d_loc.host+url }
	return url;
}

function tc_isAlias(alias) {
	alias=(typeof alias!=tc_ud?alias:(typeof tc_page_alias==tc_ud?"":tc_page_alias));
	alias=tc_fixURL(alias);
	if (alias.indexOf("?")>0) alias=alias.substring(0,alias.indexOf("?"));
	return (alias != tc_http+tc_d_loc.host+tc_d_loc.pathname);
}

function tc_loader() {
	tc_ud="undefined";
	if (typeof tc_log_path==tc_ud||tc_log_path=="") tc_log_path="/touchclarity";
	if ((typeof tc_containers!="undefined")&&(tc_containers.length>0)) { document.write("<scr"+"ipt language='JavaScript' type='text/javascript' src='" + tc_log_path + "/optimise.js'></scr"+"ipt>\n"); }
	else {
		if (tc_logging_active&&tc_configured()&&(typeof tc_done==tc_ud||tc_done==false)) {
			url=tc_fixURL(tc_url);
			tc_image=new Image();
			tc_image.onload=function(){tc_sent=true;}
			tc_image.src=tc_get_log_URL("i",url,tc_products,tc_time);
		}
		tc_done = true;
	}
}

tc_loader();