var janela = null;

function popupImage(url, title, w, h){
	var property, screenW, screenY, janela, w, h, title;
	
	// stellt die Bildschirmabmessungen fest
	// find window size
	var ns6 = (!document.all && document.getElementById);
	var ie4 = (document.all);
	var ns4 = (document.layers);
	
	if(ns6||ns4) {
		screenW = innerWidth;
		screenY = innerHeight;
	}
	else if(ie4) {
		screenW = document.body.clientWidth;
		screenY = document.body.clientHeight;
	}
	
	x = (screenW-w)/2;
	y = (screenY-h)/2;
	
	property="scrollbars=no,left="+x+",top="+y+",screenX="+x+",screenY="+y+",width="+w+",height="+h+",menubar=no,toolbar=no";
	
	if(janela != undefined) janela.close();

	janela = window.open("","",property);
	janela.focus();
	janela.document.open();
	with (janela) {
	  document.write("<html><head>");
	  // geändert 2004 für Mozilla
	  document.write('<scr' + 'ipt type="text/javascr' + 'ipt" language="JavaScr' + 'ipt">');
	  // bei click  schliessen , on click close
	  document.write("function click() { window.close(); } ");
	  document.write("document.onblur=click ");
	  // geändert 2004 für Mozilla
	  document.write('</scr' + 'ipt>');
//	  document.write('<link href="../css/global.css" rel="stylesheet" type="text/css" />');
	  document.write("<title>"+title+"</title></head>");
	  // bei Focusverlust schliessen, close if window looses focus
	  // Zeile geändert Aug 2003 (Dreamweaver machte Probleme)
	  document.write("<" + "body onblur='window.close()';");
	  document.write("marginwidth='0' marginheight='0' leftmargin='0' topmargin='0' style='background: url("+url+")'>");
//	  document.write("<center>");
//	  document.write("<img src='"+ url +"' border='0'>");
//	  document.write("<center>");
	  document.write("</body></html>");
	  document.close();
	}
}
