var imgPath
	imgPath = "images/";

var documentation = new Image();
    documentation.src = imgPath + "documentation.jpg";
var documentation_off = new Image();
    documentation_off.src = imgPath + "documentation_off.jpg";

var surveillancev54 = new Image();
    surveillancev54.src = imgPath + "surveillancev54.jpg";
var surveillancev54_off = new Image();
    surveillancev54_off.src = imgPath + "surveillancev54_off.jpg";

var printservers = new Image();
    printservers.src = imgPath + "printservers.jpg";
var printservers_off = new Image();
    printservers_off.src = imgPath + "printservers_off.jpg";	

var routers = new Image();
    routers.src = imgPath + "routers.jpg";
var routers_off = new Image();
    routers_off.src = imgPath + "routers_off.jpg";

var faq = new Image();
    faq.src = imgPath + "faq.jpg";
var faq_off = new Image();
    faq_off.src = imgPath + "faq_off.jpg";

function over(imgName) {	
	var str;	
	str = "document." + imgName + ".src=" + imgName + ".src";
	eval(str);
}

function out(imgName) {	
	var str;	
	str = "document." + imgName + ".src=" + imgName + "_off.src";
	eval(str);
}

function showLayer(layerName) {
    if (navigator.appName == "Netscape") {
        layerRef = "document.layers";
        styleSwitch = "";
    } else {
        layerRef = "document.all";
        styleSwitch = ".style";
    }
    eval(layerRef + '["' + layerName + '"]' + styleSwitch + '.visibility="visible"');
}
        
function hideLayer(layerName) {
    if (navigator.appName == "Netscape") {
        layerRef = "document.layers";
        styleSwitch = "";
    } else {
        layerRef = "document.all";
        styleSwitch = ".style";
    }
    eval(layerRef + '["' + layerName + '"]' + styleSwitch + '.visibility="hidden"');
}

function disable_right_click(e) {
	var browser = navigator.appName.substring(0, 9);
	var event_number = 0;
	if (browser=="Microsoft")
		event_number = event.button;
	else if (browser=="Netscape")
		event_number = e.which;

	if (event_number == 2 || event_number == 3 ) {
		alert("Not Functional!");
		return (false);
	}
	return (true);
}

function trap_images_mouse_events () {
	if (document.images) {
		for (var pic=0; pic<document.images.length; pic++)
			document.images[pic].onmousedown = disable_right_click;
	}
}

window.onload = trap_images_mouse_events;