// JavaScript Document

w = 650; // 横幅
h = 650; // 縦幅

function winopen() {
  x = (screen.width - w) / 2;
  y = (screen.height - h) / 2;
  subWin = window.open("index/vacation.html","OpenWindow",
    "screenX="+x+",screenY="+y+",left="+x+",top="+y+",width="+w+",height="+h);
}