function Article(docID)//Object to manage ajax calls
{
    this.docID=docID;
    this.url = 'articles.js/' + this.docID + '?open';
    
    if(typeof Article._intialized == "undefined")
    {      
        Article.prototype.loadAjax = function()//Function used to make the ajax call
        {           
            var oXHR = createXHR();
            oXHR.open('GET',this.url,false);
            oXHR.send(null);  
            return oXHR.responseText;
        };        
    }
    Article._initialiazed = true;
}