// Script by Thomas Stich // http://www.stichpunkt.de/beitrag/popup.html // use it if you like it // // 

var pop = null; 
function popdown() { 
	if (pop && !pop.closed) 
		pop.close(); 
} 

function popup(obj,w,h) { 
	var url = (obj.getAttribute) ? obj.getAttribute('href') : obj.href; 
	if (!url) 
		return true; 
	x = (screen.availWidth - w) / 2;
	y = (screen.availHeight - h) / 2;
	var args = 'width='+w+',height='+h+',left='+x+',top='+y+', scrollbars=yes, resizable=yes, menubar=no, toolbar=no, location=no'; 

	popdown(); 

	pop = window.open(url,'',args); 
	return (pop) ? false : true; 
} 

window.onunload = popdown; 
window.onfocus = popdown;



// Einbinden

// <a href="html-or.jpg" onclick="return popup(this,123,456)" title="..."> -> Eigene Größenangabe