//preload images for navigation
nav_about_on = new Image();
nav_about_on = 'images/nav_about_on.gif';

nav_process_on = new Image();
nav_process_on = 'images/nav_process_on.gif';

nav_serve_on = new Image();
nav_serve_on = 'images/nav_serve_on.gif';

nav_contact_on = new Image();
nav_contact_on = 'images/nav_contact_on.gif';

nav_about2_on = new Image();
nav_about2_on = 'images/nav_about2_on.gif';

nav_process2_on = new Image();
nav_process2_on = 'images/nav_process2_on.gif';

nav_serve2_on = new Image();
nav_serve2_on = 'images/nav_serve2_on.gif';

nav_contact2_on = new Image();
nav_contact2_on = 'images/nav_contact2_on.gif';

//stop preloadin' images

function navOn(imName) {
		if (document.images) { 
		document.images[imName].src = 'images/' + imName + "_on.gif"
			 };
}
function navOff(imName) {
		if (document.images) { 
		document.images[imName].src = 'images/' + imName + '.gif' 
		};
}