var X;
    function getX() {
            var http_request = false;

            if (window.XMLHttpRequest) { 
                http_request = new XMLHttpRequest();
                if (http_request.overrideMimeType) {
                    //http_request.overrideMimeType('text/xml');
                }
            } else if (window.ActiveXObject) { 
                try {
                    http_request = new ActiveXObject("Msxml2.XMLHTTP");
                } catch (e) {
                    try {
                        http_request = new ActiveXObject("Microsoft.XMLHTTP");
                    } catch (e) {}
                }
            }
            return http_request;
        }    
        
        function doOpen(sURL,bNewWindow,id){
		    if(X && X.readyState!=0){
			    X.abort()
		    }
		    X = getX();
		    
		    if (X) {
                // use if POST... X.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
			    
			    //calls another aspx file that will save the hits to the DB
			  
			    X.open("GET","saveHits.aspx?action=saveHits&id="+id,true);
			    
			    //after executing saveHits.aspx, it will display the return value of saveHits.aspx (calling a javascript function displayData)
			    X.onreadystatechange=function() {displayData(sURL,bNewWindow);};
			    X.send(null); // if POST... put the querystring instead of null
		    }   
        }
        
        function displayData(sURL,bNewWindow){            
		
            //checking if theres no error
            if (X.readyState == 4) {
				
                //checking if the return value is valid (without errors)
                if (X.status == 200) {  
					if (bNewWindow=="True")
						window.open(sURL);                
					else
						document.location.href = sURL;
                    //include the code below if you want to display the hits in the main page
                    //showText(X.responseText,"divContent");
                } else {
                 //  showText('There was a problem with the request.',"divInfoBody");
                }
            }            
        }

        //function to display the return value of saveHits.aspx
        function showText(text,divId) {
            divObj = document.getElementById(divId);
           if(divObj) {
                divObj.innerHTML = " ";
               divObj.innerHTML = text;
           }          
        }