<!--
// Pre load images.
if (document.images) {
    img1_over        = new Image();
    img1_off         = new Image();
    img2_over        = new Image();
    img2_off         = new Image(); 
    img3_over        = new Image();
    img3_off         = new Image();    
                                
    img1_over.src  	= "/img/roll_nav_home.gif";
    img1_off.src    = "/img/nav_home.gif";
    img2_over.src   = "/img/roll_nav_aboutus.gif";
    img2_off.src    = "/img/nav_aboutus.gif"; 
    img3_over.src   = "/img/roll_nav_az_catalog.gif";
    img3_off.src    = "/img/nav_az_catalog.gif";

}

function over(i)
{
    if (document.images)
        eval('document.img'+i+'.src=img'+i+'_over.src');
}

function out(k)
{
    if (document.images)
        eval('document.img'+k+'.src=img'+k+'_off.src');
}
//-->