/**********************************************************************/
/* Funktion oeffnet ein	Pop-Up-Fenster							             			*/	
/**********************************************************************/
function open_window(url, w, h, name, scroll, resize, tool, location)  
{
	var winleft = (screen.width - w) / 2; 
	var wintop = (screen.height - h) / 2;
	var winprops = "height="+h+",width="+w+",top="+wintop+",left="+winleft+",scrollbars="+scroll+",resizable="+resize+",toolbar="+tool+",location="+location;
	var win = window.open(url, name, winprops);
	if(window.focus) 
	{
		win.focus();
	}
}