function openPopUp(what)
{
	switch (what)
	{
		case '':
		case 'impressum':
			var mypage = "/html/impressum.html";
			var myname = "imp";
			var pu_width = 390;
			var pu_height = 467;
			break;
	}
	
	if (mypage != undefined)
	{
		var w = pu_width;
		var h = pu_height;
		var scroll = "no";
		var pos = "center";
		if(pos=="random"){LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
		if(pos=="center"){LeftPosition=(screen.width)?(screen.width-w)/2:100;TopPosition=(screen.height)?(screen.height-h)/2:100;}
		else if((pos!="center" && pos!="random") || pos==null){LeftPosition=0;TopPosition=20}
		var settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
		win12=window.open(mypage,myname,settings);
	}
	
}