/* mouseover for buttons */ 
// The "id" attribute must be in the img tag!
function imgSwap(state, id, imageName)
{            
    // IE 5+ & NS 6+ both support the W3C DOM document.getElementById() method.
    if (document.getElementById)
    {
        if (state)
        {
            eval("document.getElementById('" + id + "').src = \"images/buttons/" + imageName + "_on.gif\"");
        }
        else
        {
            eval("document.getElementById('" + id + "').src = \"images/buttons/" + imageName + "_off.gif\"");
        }
    } 

    // IE4
    else if (document.all)
    {
        if(state)
        {
            eval('document.all.' + event.srcElement.name + '.src = "images/buttons/' + event.srcElement.name + '_on.gif"');
        }
        else
        {
            eval('document.all.' + event.srcElement.name + '.src = "images/buttons/' + event.srcElement.name + '_off.gif"');
        }
    }
    
    // NS4
    else if (document.layers)
    {
        if(state)
        {
            eval("document.layers[" + id + "].src = \"images/buttons/" + imageName + "_on.gif\"");
        }
        else
        {
            eval("document.layers[" + id + "].src = \"images/buttons/" + imageName + "_off.gif\"");
        }
    } 
} // end function