//Universal function to get parameter from url string
function getParameter(aP){
	var qS = new String(location.search.substring(1,location.search.length));
	var p = qS.split("&");var val = "";
	if(aP){
		for(i=0;i<p.length;i++){
			if(p[i].split( "=" )[0] == aP){
				val = p[i].split( "=" )[1];
			}
		}
		return val;
	}
}