//Preload and name all rollover images
if (document.images) {
billboard = new Image(138,100);
billboard.src = "images/navmsg-off.gif";
arrow = new Image(22,264);
arrow.src = "images/navarw-off.gif";
nav_button_1 = new Image(16,16);
nav_button_1.src = "images/nav1a-off.gif";
nav_button_2 = new Image(16,16);
nav_button_2.src = "images/nav2a-off.gif";
nav_button_3 = new Image(16,16);
nav_button_3.src = "images/nav3a-off.gif";
nav_button_4 = new Image(16,16);
nav_button_4.src = "images/nav4a-off.gif";
nav_button_5 = new Image(16,16);
nav_button_5.src = "images/nav5a-off.gif";
nav_button_6 = new Image(16,16);
nav_button_6.src = "images/nav6a-off.gif";
nav_button_7 = new Image(16,16);
nav_button_7.src = "images/nav7a-off.gif";
nav_button_8 = new Image(16,16);
nav_button_8.src = "images/nav8a-off.gif";
nav_button_9 = new Image(16,16);
nav_button_9.src = "images/nav9a-off.gif";
nav_button_10 = new Image(16,16);
nav_button_10.src = "images/nav10a-off.gif";
nav_button_11 = new Image(161,18);
nav_button_11.src = "images/nav11a-off.gif";
nav_button_12 = new Image(161,18);
nav_button_12.src = "images/nav12a-off.gif";
nav_button_13 = new Image(161,18);
nav_button_13.src = "images/nav13a-off.gif";
nav_button_14 = new Image(161,18);
nav_button_14.src = "images/nav14-off.gif";
nav_button_15 = new Image(161,18);
nav_button_15.src = "images/nav15-off.gif";
nav_button_16 = new Image(161,18);
nav_button_16.src = "images/nav16-off.gif";
nav_button_17 = new Image(161,18);
nav_button_17.src = "images/nav17-off.gif";
nav_button_18 = new Image(161,18);
nav_button_18.src = "images/nav18-off.gif";
nav_button_19 = new Image(161,18);
nav_button_19.src = "images/nav19-off.gif";
nav_button_20 = new Image(161,18);
nav_button_20.src = "images/nav20-off.gif";
nav_button_21 = new Image(161,18);
nav_button_21.src = "images/nav21-off.gif";
nav_button_22 = new Image(161,18);
nav_button_22.src = "images/nav22-off.gif";
nav_button_23 = new Image(161,18);
nav_button_23.src = "images/nav23-off.gif";
nav_button_24 = new Image(161,18);
nav_button_24.src = "images/nav24-off.gif";
nav_button_25 = new Image(161,18);
nav_button_25.src = "images/nav25-off.gif";
nav_button_26 = new Image(161,18);
nav_button_26.src = "images/nav26-off.gif";
nav_button_27 = new Image(161,18);
nav_button_27.src = "images/nav27-off.gif";
nav_button_28 = new Image(161,18);
nav_button_28.src = "images/nav28-off.gif";
red_button_1 = new Image(15,27);
red_button_1.src = "images/arrow-off.gif";
red_button_2 = new Image(15,27);
red_button_2.src = "images/arrow-off.gif";
red_button_3 = new Image(15,27);
red_button_3.src = "images/arrow-off.gif";
red_button_4 = new Image(15,27);
red_button_4.src = "images/arrow-off.gif";
red_button_5 = new Image(15,27);
red_button_5.src = "images/arrow-off.gif";
red_button_6 = new Image(15,27);
red_button_6.src = "images/arrow-off.gif";
red_button_7 = new Image(15,27);
red_button_7.src = "images/arrow-off.gif";
red_button_8 = new Image(15,27);
red_button_8.src = "images/arrow-off.gif";
red_button_9 = new Image(15,27);
red_button_9.src = "images/arrow-off.gif";
red_button_10 = new Image(15,27);
red_button_10.src = "images/arrow-off.gif";
red_button_11 = new Image(15,27);
red_button_11.src = "images/arrow-off.gif";
red_button_12 = new Image(15,27);
red_button_12.src = "images/arrow-off.gif";
ms_logo = new Image(161,60);
ms_logo.src = "images/microsoft-logo-1.gif";
cisco_logo = new Image(161,65);
cisco_logo.src = "images/cisco-logo-1.gif";
unix_logos = new Image(161,53);
unix_logos.src = "images/apple-linux-solaris-1.gif";
apple_logo = new Image(161,60);
apple_logo.src = "images/apple-logo-1.gif";
linux_logo = new Image(161,60);
linux_logo.src = "images/linux-solaris-1.gif";
firewall_logo = new Image(161,77);
firewall_logo.src = "images/firewall-vpn-1.gif";
accept_button = new Image(111,22);
accept_button.src = "images/accept-button.gif";
accept_not_button = new Image(111,22);
accept_not_button.src = "images/accept-not-button.gif";
billboard_1_on = new Image(138,82);
billboard_1_on.src = "images/navmsg1.gif";
billboard_2_on = new Image(138,82);
billboard_2_on.src = "images/navmsg2.gif";
billboard_3_on = new Image(138,82);
billboard_3_on.src = "images/navmsg3.gif";
billboard_4_on = new Image(138,82);
billboard_4_on.src = "images/navmsg4.gif";
billboard_5_on = new Image(138,82);
billboard_5_on.src = "images/navmsg5.gif";
billboard_6_on = new Image(138,82);
billboard_6_on.src = "images/navmsg6.gif";
billboard_7_on = new Image(138,82);
billboard_7_on.src = "images/navmsg7.gif";
billboard_8_on = new Image(138,82);
billboard_8_on.src = "images/navmsg8.gif";
billboard_9_on = new Image(138,82);
billboard_9_on.src = "images/navmsg9.gif";
billboard_10_on = new Image(138,82);
billboard_10_on.src = "images/navmsg10.gif";
billboard_11_on = new Image(138,82);
billboard_11_on.src = "images/navmsg11.gif";
billboard_12_on = new Image(138,82);
billboard_12_on.src = "images/navmsg12.gif";
billboard_13_on = new Image(138,82);
billboard_13_on.src = "images/navmsg13.gif";
billboard_28_on = new Image(138,82);
billboard_28_on.src = "images/navmsg28.gif";
arrow_1 = new Image(22,282);
arrow_1.src = "images/navarw1a.gif";
arrow_2 = new Image(22,282);
arrow_2.src = "images/navarw2a.gif";
arrow_3 = new Image(22,282);
arrow_3.src = "images/navarw3a.gif";
arrow_4 = new Image(22,282);
arrow_4.src = "images/navarw4a.gif";
arrow_5 = new Image(22,282);
arrow_5.src = "images/navarw5a.gif";
arrow_6 = new Image(22,282);
arrow_6.src = "images/navarw6a.gif";
arrow_7 = new Image(22,282);
arrow_7.src = "images/navarw7a.gif";
arrow_8 = new Image(22,282);
arrow_8.src = "images/navarw8a.gif";
arrow_9 = new Image(22,282);
arrow_9.src = "images/navarw9a.gif";
arrow_10 = new Image(22,282);
arrow_10.src = "images/navarw10a.gif";
arrow_11 = new Image(22,282);
arrow_11.src = "images/navarw11a.gif";
arrow_12 = new Image(22,282);
arrow_12.src = "images/navarw12a.gif";
arrow_13 = new Image(22,282);
arrow_13.src = "images/navarw13a.gif";
nav_button_1_on = new Image(16,16);
nav_button_1_on.src = "images/nav1a-on.gif";
nav_button_2_on = new Image(16,16);
nav_button_2_on.src = "images/nav2a-on.gif";
nav_button_3_on = new Image(16,16);
nav_button_3_on.src = "images/nav3a-on.gif";
nav_button_4_on = new Image(16,16);
nav_button_4_on.src = "images/nav4a-on.gif";
nav_button_5_on = new Image(16,16);
nav_button_5_on.src = "images/nav5a-on.gif";
nav_button_6_on = new Image(16,16);
nav_button_6_on.src = "images/nav6a-on.gif";
nav_button_7_on = new Image(16,16);
nav_button_7_on.src = "images/nav7a-on.gif";
nav_button_8_on = new Image(16,16);
nav_button_8_on.src = "images/nav8a-on.gif";
nav_button_9_on = new Image(16,16);
nav_button_9_on.src = "images/nav9a-on.gif";
nav_button_10_on = new Image(16,16);
nav_button_10_on.src = "images/nav10a-on.gif";
nav_button_11_on = new Image(161,18);
nav_button_11_on.src = "images/nav11a-on.gif";
nav_button_12_on = new Image(161,18);
nav_button_12_on.src = "images/nav12a-on.gif";
nav_button_13_on = new Image(161,18);
nav_button_13_on.src = "images/nav13a-on.gif";
nav_button_14_on = new Image(161,18);
nav_button_14_on.src = "images/nav14-on.gif";
nav_button_15_on = new Image(161,18);
nav_button_15_on.src = "images/nav15-on.gif";
nav_button_16_on = new Image(161,18);
nav_button_16_on.src = "images/nav16-on.gif";
nav_button_17_on = new Image(161,18);
nav_button_17_on.src = "images/nav17-on.gif";
nav_button_18_on = new Image(161,18);
nav_button_18_on.src = "images/nav18-on.gif";
nav_button_19_on = new Image(161,18);
nav_button_19_on.src = "images/nav19-on.gif";
nav_button_20_on = new Image(161,18);
nav_button_20_on.src = "images/nav20-on.gif";
nav_button_21_on = new Image(161,18);
nav_button_21_on.src = "images/nav21-on.gif";
nav_button_22_on = new Image(161,18);
nav_button_22_on.src = "images/nav22-on.gif";
nav_button_23_on = new Image(161,18);
nav_button_23_on.src = "images/nav23-on.gif";
nav_button_24_on = new Image(161,18);
nav_button_24_on.src = "images/nav24-on.gif";
nav_button_25_on = new Image(161,18);
nav_button_25_on.src = "images/nav25-on.gif";
nav_button_26_on = new Image(161,18);
nav_button_26_on.src = "images/nav26-on.gif";
nav_button_27_on = new Image(161,18);
nav_button_27_on.src = "images/nav27-on.gif";
nav_button_28_on = new Image(161,18);
nav_button_28_on.src = "images/nav28-on.gif";
red_button_1_on = new Image(15,27);
red_button_1_on.src = "images/arrow-on.gif";
red_button_2_on = new Image(15,27);
red_button_2_on.src = "images/arrow-on.gif";
red_button_3_on = new Image(15,27);
red_button_3_on.src = "images/arrow-on.gif";
red_button_4_on = new Image(15,27);
red_button_4_on.src = "images/arrow-on.gif";
red_button_5_on = new Image(15,27);
red_button_5_on.src = "images/arrow-on.gif";
red_button_6_on = new Image(15,27);
red_button_6_on.src = "images/arrow-on.gif";
red_button_7_on = new Image(15,27);
red_button_7_on.src = "images/arrow-on.gif";
red_button_8_on = new Image(15,27);
red_button_8_on.src = "images/arrow-on.gif";
red_button_9_on = new Image(15,27);
red_button_9_on.src = "images/arrow-on.gif";
red_button_10_on = new Image(15,27);
red_button_10_on.src = "images/arrow-on.gif";
red_button_11_on = new Image(15,27);
red_button_11_on.src = "images/arrow-on.gif";
red_button_12_on = new Image(15,27);
red_button_12_on.src = "images/arrow-on.gif";
ms_logo_on = new Image(161,60);
ms_logo_on.src = "images/microsoft-logo-on.gif";
cisco_logo_on = new Image(161,65);
cisco_logo_on.src = "images/cisco-logo-on.gif";
unix_logos_on = new Image(161,53);
unix_logos_on.src = "images/apple-linux-solaris-on.gif";
apple_logo_on = new Image(161,60);
apple_logo_on.src = "images/apple-logo-on.gif";
linux_logo_on = new Image(161,60);
linux_logo_on.src = "images/linux-solaris-on.gif";
firewall_logo_on = new Image(161,77);
firewall_logo_on.src = "images/firewall-vpn-on.gif";
accept_button_on = new Image(111,22);
accept_button_on.src = "images/accept-button-over.gif";
accept_not_button_on = new Image(111,22);
accept_not_button_on.src = "images/accept-not-button-over.gif";
}

//Event can change up to three images. Pass 0 if no second or third image.
//Image names must match name in function. 
function rollover(PrimaryImgName,imgObjName1,imgObjName2,imgObjName3) {
	if (document.images) {
	document.images[PrimaryImgName].src = eval(imgObjName1 + ".src");
	if (imgObjName2 == "0") {return};
	document.images["ServiceDescription"].src = eval(imgObjName2 + ".src");
	if (imgObjName3 == "0") {return};
	document.images["ArrowDescription"].src = eval(imgObjName3 + ".src");
}}