var resId='ajax_res';

function getHTTPObject()
{        
    var result = null;
    if (window.XMLHttpRequest) {
        // code for IE7+, Firefox, Chrome, Opera, Safari
        result = new XMLHttpRequest();
        if (result.overrideMimeType) result.overrideMimeType('text/html');
    }
    else if (window.ActiveXObject) {
        // code for IE6, IE5
        try {
            result = new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch (e) {
            try {
                result = new ActiveXObject("Microsoft.XMLHTTP");
            }
            catch (e) { }
        }
    }
	return result;
}

 
var http = getHTTPObject(); // We create the HTTP Object 
  if (http == null) {
			alert("Cannot Create Ajax Component");
			
		}




function stateChanged() {
	if(http.readyState < 4)
		{
       	  document.getElementById(resId).innerHTML = '<img src="images/process.gif" width="20" height="20"/>' ;
		}
		
		
		 
    if (http.readyState == 4) {
        if (http.status == 200) {
            try {
                var responseText_r = http.responseText;
				 document.getElementById(resId).innerHTML = responseText_r; 
				
            }
            catch (e) {
                alert("An Error Occured While Transfering Data.");
            }
        }
    }
}


function check_category(url,params,Idresult)
{
	 resId=Idresult;
	 /* http.open("GET", 'article_category_pdf_ajax.php?ajax_cat=' + document.getElementById('art_category').value , true); */
	 http.open("GET", url+document.getElementById(params).value , true);
      http.onreadystatechange = stateChanged; 
      http.send(null); 
	    return true;
}