// JavaScript Document
function changeLanguage(lang) { 
	//document.location='?'+document.getElementById('languageURL').value+'&langID='+lang;
    document.location=setURLvariable(document.location.href,'langID',lang);
    
}

function setURLvariable(url,variable,value)
{
	var ind=url.indexOf("?");
	var url1=url.substr(0,ind);
	var url2=url.substr(ind+1);
	//alert(url1);
	//alert(url2);
	var ele=url2.split("&");
	//alert("ELE"+ele);
	varFound=false
	for(i=0;(i<ele.length)&&(!varFound);i++)
	{
		
		ind2=ele[i].indexOf("=");
		val=ele[i].substr(0,ind2);
		//alert(val);
		if(val==variable)
		{
			ele[i]=variable+'='+value;
			varFound=true;
		}
	}
	
	if(varFound==false)
	{
		ele[ele.length]=variable+'='+value;
	}
	var ret=url1+"?"+ele.join("&");
	//alert (ret);
	return ret;
	
}