function OpenWin(nome,w,h) {
   var l = Math.floor((screen.width-w)/2);
   var t = Math.floor((screen.height-h)/2);
  	option = "resizable=no,toolbar=no,scrollbars=no,width="+w+",height="+h+ ",top="+t+",left="+l;
	window.open("",nome, option);
}