function ro(imageid, onnoff, aff) {
    var img = document.getElementById('ctl00_nav_' + imageid);
    var base = 'img/navigation_ie6/';
    var ext = '.png';

    if (aff == 1) {
        base = 'img/aff_navigation_ie6/';
    }

   (onnoff == 1 ? img.src = base + imageid + 'r' + ext : img.src = base + imageid + ext);


}

function countCheckboxes(form, checkname) {
    var max_allowed = 5;
    var total = 0;
    var max = eval("document." + form + "." + checkname + ".length");
    for (var idx = 0; idx < max; idx++) {
        if (eval("document." + form + "." + checkname + "[" + idx + "].checked") == true) {
            total += 1;
        }
    }
    
    if (total >= max_allowed) {
        //deactivate the rest
        for (var idx = 0; idx < max; idx++) {
            if (eval("document." + form + "." + checkname + "[" + idx + "].checked") == false) {
                eval("document." + form + "." + checkname + "[" + idx + "].disabled = true");
            }
        }    
     }else{
        for (var idx = 0; idx < max; idx++) {
            eval("document." + form + "." + checkname + "[" + idx + "].disabled = false");
        }
    }
}
function showhide(what_show, what_hide, cell) {

    document.getElementById(what_show).style.display = 'block';
    document.getElementById(what_hide).style.display = 'none';
    document.getElementById(cell).style.width = '800px';

}
function CheckAllCheckBoxes(WhatForm, WhatName, CheckVal) {
    //alert(CheckVal);

    for (i = 0; i < document.forms[WhatForm].elements.length; i++) {

        elm = document.forms[WhatForm].elements[i]

        if (elm.type == 'checkbox' && elm.name.indexOf(WhatName) !=-1) {
            elm.checked = CheckVal
        }
    }
}