var navtag = []

    function ghilight()
    {
        var img = $(this)
        var src = img.attr('src')
        img.attr('src', src.replace('grid/', 'grid/over/')).css('cursor', 'pointer')
    }

    function unghilight()
    {
        var img = $(this)
        var src = img.attr('src')
        img.attr('src', src.replace('grid/over/', 'grid/'))
    }

    function hilight()
    {
 	var src = $(this).attr('src')
	$(this).attr('src', src.replace('nav', 'nav/over'))
    }

    function unhilight()
    {
	var src = $(this).attr('src')
	$(this).attr('src', src.replace('nav/over', 'nav'))
    }

    function filter(type)
    {
        $('.filt').hide()
        $('.'+type).show()
        return false;
    }