function pop(URL) {
	
	var width  = 600;
 	var height = 500;
 	var left   = (screen.width  - width)/2;
 	var top    = (screen.height - height)/2;
 	var params = 'width='+width+', height='+height;
 	params += ', top='+top+', left='+left;
 	params += ', directories=no';
 	params += ', location=no';
 	params += ', menubar=no';
 	params += ', resizable=yes';
 	params += ', scrollbars=yes';
 	params += ', status=no';
 	params += ', toolbar=no';
 	helpwindow=window.open(URL,'sealsportal', params);
	
	helpwindow.focus();
	return false;
}

function popErez4(file) {
	helpwindow = window.open(file,"erez4popup","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, width=820, height=1200, top=0, left=0");
	helpwindow.focus();
	return false;
}