function openWin() {
    nwin = window.open('sp03win.html','nwin','width=760,height=682,scrollbars=yews,resizable=yes');
    nwin.focus();
  }

  function spimgdisp() {
    bg = new Array();
    for(i=0;i<3;i++) {
      bg[i] = "image/sp_banner_t"+i+".gif";
    }
    n = Math.floor(Math.random() * bg.length);
    ststr = "url('"+bg[n]+"') no-repeat center top";
    nm = document.getElementById("hd");
    nm.style.background = ststr;
  }

  function randmimgdisp(n) {
    var imgarr = new Array(n);
    var num = (Math.floor(Math.random() * imgarr.length)) + 1;
    return num;    
  }