function createFromUrl(ret)
{
	if (queryString("from") != "false" && ret.indexOf("from") == -1)
	{
		if (ret.indexOf("?") > 0)
			ret += "&from=" + queryString("from");
		else
			ret += "?from=" + queryString("from");			
	}
	if (queryString("lingua") != "false" && ret.indexOf("lingua") == -1)
	{
		if (ret.indexOf("?") > 0)
			ret += "&lingua=" + queryString("lingua");
		else
			ret += "?lingua=" + queryString("lingua");			
	}
	if (queryString("utid") != "false" && ret.indexOf("utid") == -1)
	{
		if (ret.indexOf("?") > 0)
			ret += "&utid=" + queryString("utid");
		else
			ret += "?utid=" + queryString("utid");			
	}
	if (queryString("catp") != "false" && ret.indexOf("catp") == -1)
	{
		if (ret.indexOf("?") > 0)
			ret += "&catp=" + queryString("catp");
		else
			ret += "?catp=" + queryString("catp");			
	}
		
	document.location.href = ret;
}
	
function PageQuery(q) 
{
	if (q.length > 1) 
		this.q = q.substring(1, q.length);
	else 
		this.q = null;
	this.keyValuePairs = new Array();

	if (q) 
	{
		for(var i=0; i < this.q.split("&").length; i++) 
		{
			this.keyValuePairs[i] = this.q.split("&")[i];
		}
	}

	this.getKeyValuePairs = function() 
	{ 
		return this.keyValuePairs; 
	}		

	this.getValue = function(s) 
	{
		for(var j=0; j < this.keyValuePairs.length; j++) 
		{
			if (this.keyValuePairs[j].split("=")[0] == s)
				return this.keyValuePairs[j].split("=")[1];
		}
		return false;
	}

	this.getParameters = function() 
	{
		var a = new Array(this.getLength());
		for(var j=0; j < this.keyValuePairs.length; j++) 
		{
			a[j] = this.keyValuePairs[j].split("=")[0];
		}
		return a;
	}

	this.getLength = function() 
	{ 
		return this.keyValuePairs.length; 
	} 
}

function queryString(key)
{
	var page = new PageQuery(window.location.search); 
	return unescape(page.getValue(key)); 
}