/* open a new window with url as param or focus to it if already open */
function popitup(url)
{
	newwindow='';
	if (!newwindow.closed && newwindow.location) {
		newwindow.location.href = url;
	} else 	{
		newwindow=window.open(url,'contractpopup','height=360,width=620,scrollbars=yes');
		if (!newwindow.opener) newwindow.opener = self;
	}
	if (window.focus) {newwindow.focus()}
	return false;
}

/* pass a url back to the opening page */
function to_old_win(url) {
	opener.location.href = url;
}

/*function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

function sndReq(update_node, url) {
    
    var http = createRequestObject();
    
    http.open('get', url);
    http.onreadystatechange = function () {
		if(http.readyState == 4){
			var response = http.responseText;
			document.getElementById(update_node).innerHTML = response;
		}
    };
    http.send(null);
}*/

function sndReq(update_node, url) {
	var http_request = false;

	if (window.XMLHttpRequest) { // Mozilla, Safari, ...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
			// See note below about this line
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}

	if (!http_request) {
		alert('Giving up :( Cannot create an XMLHTTP instance');
		return false;
	}
	http_request.onreadystatechange = function() { write_content(http_request, update_node); };
	http_request.open('GET', url, true);
	http_request.send(null);

}

function write_content(http_request, update_node) {

	if (http_request.readyState == 4) {
		document.getElementById(update_node).innerHTML = http_request.responseText;
	}

}