function initRollOverImages() {
  var image_cache = new Object();
  $("img.swap").each(function(i) {
    var imgsrc = this.src;
    var dot = this.src.lastIndexOf('.');
    var imgsrc_on = this.src.substr(0, dot) + '_on' + this.src.substr(dot, 4);
    image_cache[this.src] = new Image();
    image_cache[this.src].src = imgsrc_on;
    $(this).hover(
      function() { this.src = imgsrc_on; },
      function() { this.src = imgsrc; });
  });
}

$(document).ready(initRollOverImages);


function openwin(url) {
 w = window.open(url, 'win','width=945,height=800,status=no,scrollbars=yes,directories=no,menubar=no,resizable=no,toolbar=no');
}
function openwin2(url) {
 wx = window.open(url, 'win2','width=700,height=800,status=no,scrollbars=yes,directories=no,menubar=no,resizable=no,toolbar=no');
}
function openwin3(url) {
 wxx = window.open(url, 'win3','width=700,height=800,status=no,scrollbars=yes,directories=no,menubar=no,resizable=no,toolbar=no');
}