if (document.images) {
  image1on = new Image(); image1on.src = "images/bo_home.gif";
  image2on = new Image(); image2on.src = "images/bo_features.gif";
  image3on = new Image(); image3on.src = "images/bo_demos.gif";
  image4on = new Image(); image4on.src = "images/bo_themes.gif";
  image5on = new Image(); image5on.src = "images/bo_about.gif";
  image6on = new Image(); image6on.src = "images/bo_testimonials.gif";
  image7on = new Image(); image7on.src = "images/bo_gift.gif";
  image8on = new Image(); image8on.src = "images/bo_faq.gif";
  image9on = new Image(); image9on.src = "images/bo_contact.gif";
  image10on = new Image(); image10on.src = "images/bo_sitemap.gif";
  image11on = new Image(); image11on.src = "images/bo_join.gif";
  image12on = new Image(); image12on.src = "images/bo_tour.gif";

  image1off = new Image(); image1off.src = "images/b_home.gif";
  image2off = new Image(); image2off.src = "images/b_features.gif";
  image3off = new Image(); image3off.src = "images/b_demos.gif";
  image4off = new Image(); image4off.src = "images/b_themes.gif";
  image5off = new Image(); image5off.src = "images/b_about.gif";
  image6off = new Image(); image6off.src = "images/b_testimonials.gif";
  image7off = new Image(); image7off.src = "images/b_gift.gif";
  image8off = new Image(); image8off.src = "images/b_faq.gif";
  image9off = new Image(); image9off.src = "images/b_contact.gif";
  image10off = new Image(); image10off.src = "images/b_sitemap.gif";
  image11off = new Image(); image11off.src = "images/b_join.gif";
  image12off = new Image(); image12off.src = "images/b_tour.gif";

}

function turnOn(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "on.src");
  }
}

function turnOff(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "off.src");
  }
}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}