function openWindow (url, width, height, toolbar, scroll, center) {
	var name = new Date();
	name = name.getTime();
	name = name.toString();
	toolbar = toolbar ? "yes" : "no";
	scroll = scroll ? "yes" : "no";
	var features = "toolbar="+toolbar+",menubar="+toolbar+",location="+toolbar+",status="+toolbar+",scrollbars="+scroll+",resizable="+scroll;
	if (width) features += ",width="+width;
	if (height) features += ",height="+height;
	if (center) {
		var x = 0, y = 0;
		if (width && window.screen.availWidth) {
			x = Math.round ((window.screen.availWidth-parseInt (width)) / 2);
			features += ",screenX="+x+",left="+x;
		}
		if (height && window.screen.availHeight) {
			y = Math.round ((window.screen.availHeight-parseInt (height)) / 2);
			features += ",screenY="+y+",top="+y;
		}
	}
	openWindowReference = window.open (url, name, features);
	if (openWindowReference != null && !openWindowReference.closed) {
		openWindowReference.focus();
	}
}
function openCenter (url, width, height) {
	openWindow (url, width, height, false, false, true);
}
function openCenterChrome (url, width, height) {
	openWindow (url, width, height, true, false, true);
}
function openCenterScroll (url, width, height) {
	openWindow (url, width, height, false, true, true);
}
function openCenterChromeScroll (url, width, height) {
	openWindow (url, width, height, true, true, true);
}



function enlarge (image) {
	openCenter ("/enlarge.php?src=" + image, 620, 440);
}