if (document.images) {
<!-- main_menu -->

	var about_ln = new Image();
	about_ln.src = "/images/design/first_menuabout.gif";
	var about_la = new Image();
	about_la.src = "/images/design/first_menuabout_over.gif";

	var tehnologies_ln = new Image();
	tehnologies_ln.src = "/images/design/first_menutehnologies.gif";
	var tehnologies_la = new Image();
	tehnologies_la.src = "/images/design/first_menutehnologies_over.gif";

	var devices_ln = new Image();
	devices_ln.src = "/images/design/first_menudevices.gif";
	var devices_la = new Image();
	devices_la.src = "/images/design/first_menudevices_over.gif";

	var aboutus_ln = new Image();
	aboutus_ln.src = "/images/design/first_menuaboutus.gif";
	var aboutus_la = new Image();
	aboutus_la.src = "/images/design/first_menuaboutus_over.gif";

	var contacts_ln = new Image();
	contacts_ln.src = "/images/design/first_menucontacts.gif";
	var contacts_la = new Image();
	contacts_la.src = "/images/design/first_menucontacts_over.gif";

	var forum_ln = new Image();
	forum_ln.src = "/images/design/first_menuforum.gif";
	var forum_la = new Image();
	forum_la.src = "/images/design/first_menuforum_over.gif";

<!-- /main_menu -->

}

function img_act(imgName) {
	type=imgName;
        document[imgName+"_l"].src = eval(type + "_la.src");
}

function img_inact(imgName) {
	type=imgName;
 	document[imgName+"_l"].src = eval(type + "_ln.src");
}