function getQueryVariable(variable) {   
	var query = window.location.search.substring(1);   
	var vars = query.split("&");   
	for (var i=0;i<vars.length;i++) {     
		var pair = vars[i].split("=");     
		if (pair[0] == variable) {       
			return pair[1];     
		}   
	}    
	return ""; 
}