function openAjax() {
	var xmlhttp=false;
	    try {
                xmlhttp = new ActiveXObject('Msxml2.XMLHTTP');
        } catch (e) {
                try {
                        xmlhttp = new
                        ActiveXObject('Microsoft.XMLHTTP'); 
            } catch (e) {
                xmlhttp = false;
                        }
        }
        if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
                xmlhttp = new XMLHttpRequest(); 
        }
	return(xmlhttp);
}

function getPage(file, IDBox, Opt){
        var xmlhttp = openAjax();
        var sel = IDBox;
        xmlhttp.open('GET',file+sel+'&Opt='+Opt, true);
        xmlhttp.onreadystatechange=function() {
        if (xmlhttp.readyState==4) {
                var content = xmlhttp.responseText; 
                if( content ){ 
					document.getElementById(IDBox).innerHTML = content;
            }
        }
        }
        xmlhttp.send(null) 
return;
}