var file_to_image = new Array();

// create associate array to hold pages

file_to_image['findaloc/index.shtml'] = '01';
file_to_image['menu.shtml'] = '02';
file_to_image['http://65.86.161.70/hscver2007/handshakeclub.shtml'] = '03';
file_to_image['promotions.shtml'] = '04';
file_to_image['catering-banquets/caterin.shtml'] = '05';
file_to_image['index.tagx'] = '06';
file_to_image['corporate.shtml'] = '07';
file_to_image['about.shtml'] = '08';
file_to_image['fundraising.shtml'] = '09';

highlightCurrent();

function highlightCurrent() {
	var filename = returnDocument();
	var on_image = '/images/site/nav/' + file_to_image[filename] + '_on.png';
	var image_id = 'nav' + file_to_image[filename];
	if(returnObjById(image_id)) {
		returnObjById(image_id).src = on_image;
		return true;
	}
	else {
		return;
	}
}

function returnDocument() {
        var file_name = document.location.href;
        var end = (file_name.indexOf("?") == -1) ? file_name.length : file_name.indexOf("?");
        return file_name.substring(file_name.lastIndexOf("/")+1, end).toLowerCase();
}

function returnObjById( id )
{
	if (document.getElementById)
		var returnVar = document.getElementById(id);
    	else if (document.all)
		var returnVar = document.all[id];
	else if (document.layers)
		var returnVar = document.layers[id];
	return returnVar;
}