function getUrlVar(varname){

    var value = "";	
	var url = window.location.href.toLowerCase();
	varname = varname.toLowerCase();
	if (url.indexOf(varname + "=") > -1)
	{
	    var index1 = url.indexOf(varname + "=") + (varname + "=").length;
	    var index2 = url.indexOf("&");
	    if(index2 == -1) index2 = url.length;
	    value = window.location.href.substr(index1, index2);
	}
	return value;
	
}