// JavaScript Document
function chkAdvert(checkboxId, sourceId, selectedAds)
{
    var checkbox = document.getElementById(checkboxId);
    var source = document.getElementById(sourceId);
    var selectedAdvertsInput = document.getElementById(selectedAds);
    var selectedAdvertIds = new Array();
    
    selectedAdvertIds = selectedAdvertsInput.value.split(',');
    
    if (checkbox.checked)
    {
        checkbox.checked = false;
        source.src = "/Images/chkBoxOff.gif";
        var removed;
        for (var i = 0; i < selectedAdvertIds.length; i++)
        {
            if (selectedAdvertIds[i] == checkbox.parentNode.title)
                removed = selectedAdvertIds.splice(i, 1);
        }
        if (selectedAdvertIds.length > 0)
            selectedAdvertsInput.value = selectedAdvertIds.join(',');
    }
    else
    {
        checkbox.checked = true;
        source.src = "/Images/chkBoxOn.gif";
        selectedAdvertIds.push(checkbox.parentNode.title);
        selectedAdvertsInput.value = selectedAdvertIds.join(',');
    }
}