var w = 500;
var h = 500;
var winName = 'newWin';
var left = (screen.width/2)-(w/2);
var top = (screen.height/2)-(h/2);
var win = undefined;
/*function popUp(theURL,winName,features) {*/
function popUp(theURL,winName) { //v2.0
	if(typeof(win) != "undefined") {
    win.close();
	}
	/*win = window.open(theURL,winName,'width=546,height=416');*/
	win = window.open(theURL,winName,'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, copyhistory=no, width='+w+', height='+h+', top='+top+', left='+left);
}