if (document.images) 
{
	img1on = new Image(); img1on.src = "images/nav_overview_rol.gif";
	img2on = new Image(); img2on.src = "images/nav_law_rol.gif";
	img3on = new Image(); img3on.src = "images/nav_report_rol.gif";
	img4on = new Image(); img4on.src = "images/nav_vision_rol.gif";
	img5on = new Image(); img5on.src = "images/nav_resources_rol.gif";
	img6on = new Image(); img6on.src = "images/nav_contact_rol.gif";
	img7on = new Image(); img7on.src = "images/nav_home_rol.gif";


	img1off = new Image(); img1off.src = "images/nav_overview.gif";
	img2off = new Image(); img2off.src = "images/nav_law.gif";
	img3off = new Image(); img3off.src = "images/nav_report.gif";
	img4off = new Image(); img4off.src = "images/nav_vision.gif";
	img5off = new Image(); img5off.src = "images/nav_resources.gif";
	img6off = new Image(); img6off.src = "images/nav_contact.gif";
	img7off = new Image(); img7off.src = "images/nav_home.gif";


	var imgNow;
}

function imgOn(imgName) {
 if (document.images) {
 document[imgName].src = eval(imgName + "on.src"); }
 }
 function imgOff(imgName) {
 if (document.images) {
	if (imgName != imgNow)
	 document[imgName].src = eval(imgName + "off.src"); } }