function dblClick() {
        var el=document.getElementById("code");
        var url="http://"+ document.location.host+"/js/getcode.php";
	el.value="";        

        el.ondblclick=function() {
            
            function setCode() {                
                el.value=(objXmlHttp.readyState==4 || objXmlHttp.readyState=="complete") ? objXmlHttp.responseText : "";			     			
			}            
            
            var ua = navigator.userAgent;
			var objXmlHttp=null;
		
			if (ua.indexOf("Opera")>=0) return;
		
			if (ua.indexOf("MSIE")>=0) { 
				var strName="Msxml2.XMLHTTP";
				if (navigator.appVersion.indexOf("MSIE 5.5")>=0) {
					strName="Microsoft.XMLHTTP";
				} 
		
				try { 
					objXmlHttp=new ActiveXObject(strName);
					objXmlHttp.onreadystatechange=setCode;
				} 
				catch(e) {	
                    return ;
				} 
			} 
		
			else if (ua.indexOf("Mozilla")>=0) {
				objXmlHttp=new XMLHttpRequest();
				objXmlHttp.onload=setCode;
				objXmlHttp.onerror=setCode; 
			}
            else
                return;

            objXmlHttp.open("GET", url, true);
            objXmlHttp.send(null);
                
        }
    }
    var dblCl = new dblClick();