var newwin;
function WinOpen(URL,WN,F){
	if(newwin){
		if(!newwin.closed){
			newwin = window.open(URL,WN,F);
			newwin.focus();
		}else{
			newwin = window.open(URL,WN,F);
		}
	}else{
		newwin = window.open(URL,WN,F);
	}
}