icon1_off = new Image();
icon1_off.src = "/images/icon_facebook_off2.gif";
icon1_on = new Image();
icon1_on.src = "/images/icon_facebook_on.gif";
icon2_off = new Image();
icon2_off.src = "/images/icon_twitter_off2.gif";
icon2_on = new Image();
icon2_on.src = "/images/icon_twitter_on.gif";
icon3_off = new Image();
icon3_off.src = "/images/icon_rss_off2.gif";
icon3_on = new Image();
icon3_on.src = "/images/icon_rss_on.gif";
icon4_off = new Image();
icon4_off.src = "/images/icon_mail_off2.gif";
icon4_on = new Image();
icon4_on.src = "/images/icon_mail_on.gif";
icon5_off = new Image();
icon5_off.src = "/images/icon_comp_off2.gif";
icon5_on = new Image();
icon5_on.src = "/images/icon_comp_on.gif";
icon6_off = new Image();
icon6_off.src = "/images/icon_blog_off2.gif";
icon6_on = new Image();
icon6_on.src = "/images/icon_blog_on.gif";

function changeImage(imgDocID,imgObjName) {
   document.images[imgDocID].src = eval(imgObjName + ".src");
}