function openImmowelt(immobil){
	pu_width=960;
	pu_height=600;
	src_left=(screen.width-pu_width)/2;
	src_top=(screen.height-pu_height)/2;
	window.open(immobil,"immowelt","width="+pu_width+",height="+pu_height+",status=no,scrollbars=yes,toolbar=yes,resizable=yes,left="+src_left+",top="+(src_top+50)+"");
	return false;
}