// --- standart popup
	function openWindow (nameurl, namewindow, width, height) {

    x = (640 - width)/2, y = (480 - height)/2;
    if (screen) {
        y = (screen.availHeight - height)/2;
        x = (screen.availWidth - width)/2;
    }
    var prevwin = window.open(nameurl,namewindow,'width='+width+',height='+height+',screenX='+x+',screenY='+y+',top='+y+',left='+x+',scrollbars=yes, resizable=yes');
    prevwin.focus();
	}
	
	function openWindow2 (subtarget, nameurl, namewindow, width, height) {

    x = (640 - width)/2, y = (480 - height)/2;
    if (screen) {
        y = (screen.availHeight - height)/2;
        x = (screen.availWidth - width)/2;
    }
    document.location.href=subtarget; 
    var prevwin = window.open(nameurl,namewindow,'width='+width+',height='+height+',screenX='+x+',screenY='+y+',top='+y+',left='+x+',scrollbars=yes, resizable=yes');
    prevwin.focus();
	}