function querystringExtractor(name)
{  
name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");  
var regexS = "[\\?&]"+name+"=([^&#]*)";  
var regex = new RegExp( regexS );  
var results = regex.exec( window.location.href );  
if( results == null )    return ""; 
 else    return results[1];}

var article = querystringExtractor('article')