function PopUp(file, width, height) {
	PopUpWindow = open(file, "PopUpWindow", "top="+(screen.availWidth-width)/2+",left="+(screen.availHeight-height)/2+",width="+width+",height="+height+",resizible=no,status=no,toolbar=no,menubar=no,scrollbars=yes");
	PopUpWindow.focus( )	
}