browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )))

function overImg(imgName)
{
if ( browser)
{
if (document.images)
{
document[imgName].src=eval(imgName+"on.src");
}
}
}

function outImg(imgName)
{
if ( browser) 
{
if (document.images)
{
document[imgName].src=eval(imgName+"of.src");
}
}
}

if ( browser) 
{
if (document.images)
{

h1on=new Image();
h1on.src="h1_n.jpg";
h1of=new Image();
h1of.src="h1_f.jpg";

h2on=new Image();
h2on.src="h2_n.jpg";
h2of=new Image();
h2of.src="h2_f.jpg";

h3on=new Image();
h3on.src="h3_n.jpg";
h3of=new Image();
h3of.src="h3_f.jpg";

h4on=new Image();
h4on.src="h4_n.jpg";
h4of=new Image();
h4of.src="h4_f.jpg";

h5on=new Image();
h5on.src="h5_n.jpg";
h5of=new Image();
h5of.src="h5_f.jpg";

h6on=new Image();
h6on.src="h6_n.jpg";
h6of=new Image();
h6of.src="h6_f.jpg";


}
}