isamap = new Object();
isamap[0] = "_df"
isamap[1] = "_ov"
isamap[2] = "_ot"
isamap[3] = "_dn"

function isimgact(id, act)
{
    if(document.images) document.images[id].src = eval( "isimages." + id + isamap[act] + ".src");
}

if (document.images) { // ensure browser can do JavaScript rollovers.
isimages = new Object();
isimages.aboutroll_df = new Image();
isimages.aboutroll_df.src = "images/main_about_off.gif";

isimages.aboutroll_ov = new Image();
isimages.aboutroll_ov.src = "images/main_about_on.gif";

isimages.feedbackroll_df = new Image();
isimages.feedbackroll_df.src = "images/main_feedback_off.gif";

isimages.feedbackroll_ov = new Image();
isimages.feedbackroll_ov.src = "images/main_feedback_on.gif";

isimages.maproll_df = new Image();
isimages.maproll_df.src = "images/main_directions_off.gif";

isimages.maproll_ov = new Image();
isimages.maproll_ov.src = "images/main_directions_on.gif";

isimages.actsroll_df = new Image();
isimages.actsroll_df.src = "images/main_performers_off.gif";

isimages.actsroll_ov = new Image();
isimages.actsroll_ov.src = "images/main_performers_on.gif";

isimages.thanksroll_df = new Image();
isimages.thanksroll_df.src = "images/main_thanks_off.gif";

isimages.thanksroll_ov = new Image();
isimages.thanksroll_ov.src = "images/main_thanks_on.gif";

isimages.saboutroll_df = new Image();
isimages.saboutroll_df.src = "images/sidebar_about_off.gif";

isimages.saboutroll_ov = new Image();
isimages.saboutroll_ov.src = "images/sidebar_about_on.gif";

isimages.sfeedbackroll_df = new Image();
isimages.sfeedbackroll_df.src = "images/sidebar_feedback_off.gif";

isimages.sfeedbackroll_ov = new Image();
isimages.sfeedbackroll_ov.src = "images/sidebar_feedback_on.gif";

isimages.smaproll_df = new Image();
isimages.smaproll_df.src = "images/sidebar_directions_off.gif";

isimages.smaproll_ov = new Image();
isimages.smaproll_ov.src = "images/sidebar_directions_on.gif";

isimages.sactsroll_df = new Image();
isimages.sactsroll_df.src = "images/sidebar_performers_off.gif";

isimages.sactsroll_ov = new Image();
isimages.sactsroll_ov.src = "images/sidebar_performers_on.gif";

isimages.sthanksroll_df = new Image();
isimages.sthanksroll_df.src = "images/sidebar_thanks_off.gif";

isimages.sthanksroll_ov = new Image();
isimages.sthanksroll_ov.src = "images/sidebar_thanks_on.gif";


}

function MM_openBrWindow(theURL,winName,features) 
{ 
 window.open(theURL,winName,features);
}

function closeWin() 
{
 window.top.close();
}