// Web browser detection for Microsoft Internet Explorer
var preloadimages=new Array("images/new/home.png","images/new/home_mouseover.png","images/new/home_mouseclick.png", "images/new/help.png","images/new/help_mouseover.png","images/new/help_mouseclick.png", "images/new/logout.png","images/new/logout_mouseover.png","images/new/logout_mouseclick.png", "images/new/submit.png","images/new/submit_mouseover.png","images/new/submit_mouseclick.png", "images/new/cancel.png","images/new/cancel_mouseover.png","images/new/cancel_mouseclick.png", "images/new/back.png","images/new/back_mouseover.png","images/new/back_mouseclick.png", "images/new/default.png","images/new/default_mouseover.png","images/new/default_mouseclick.png");
var agt = navigator.userAgent.toLowerCase();
var is_ie = ((agt.indexOf('msie') != -1) && (agt.indexOf('opera') == -1));
var theimages=new Array();
for (p=0;p<preloadimages.length;p++){
  theimages[p] = new Image();
  theimages[p].src = preloadimages[p];
}
function roll(img_name, img_src){
  imgobj = document.getElementById(img_name);
  if(imgobj){
    if(is_ie){
      // Workaround for Microsoft Internet Explorer's (version 6.x or earlier) lack of transparent PNG support
      imgobj.src = 'images/new/shim.gif';
      imgobj.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/new/"+img_src+"', sizingMethod='scale');";
      imgobj.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").enabled = true;
    }
    else
      imgobj.src = 'images/new/'+img_src;
  }
}
function apply_msie_filters(){
  roll('home', 'home.png');
  roll('help', 'help.png');
  roll('logout', 'logout.png');
  roll('submit', 'submit.png');
  roll('cancel', 'cancel.png');
  roll('back', 'back.png');
  roll('default', 'default.png');
}