if (document.images) {
	var load = "no";
	
	//main menu-site
	image1on = new Image(); image1on.src = "images/about_on.gif";
	image2on = new Image(); image2on.src = "images/partners_on.gif";
	image4on = new Image(); image4on.src = "images/activities_on.gif";
	image5on = new Image(); image5on.src = "images/kits_on.gif";
	image6on = new Image(); image6on.src = "images/staff_on.gif";
	image7on = new Image(); image7on.src = "images/links_on.gif";
	image9on = new Image(); image9on.src = "images/contact_on.gif";

	image1off = new Image(); image1off.src = "images/about_off.gif";
	image2off = new Image(); image2off.src = "images/partners_off.gif";
	image4off = new Image(); image4off.src = "images/activities_off.gif";
	image5off = new Image(); image5off.src = "images/kits_off.gif";
	image6off = new Image(); image6off.src = "images/staff_off.gif";
	image7off = new Image(); image7off.src = "images/links_off.gif";
	image9off = new Image(); image9off.src = "images/contact_off.gif";
	load = "yes";
}

function imageOff(imgName) 
	{if (load == "yes") {if (document.images) {document.images[imgName].src = eval(imgName + "off.src");}}}
function imageOn(imgName) 
	{if (load == "yes") {if (document.images) {document.images[imgName].src = eval(imgName + "on.src");}}}