if (document.images) {
billboard = new Image(138,100);
billboard.src = "images/navmsg-off.gif";
arrow = new Image(22,237);
arrow.src = "images/navarw-off.gif";
nav_button_1 = new Image(138,18);
nav_button_1.src = "images/nav1-off.gif";
nav_button_2 = new Image(138,18);
nav_button_2.src = "images/nav2-off.gif";
nav_button_3 = new Image(138,18);
nav_button_3.src = "images/nav3-off.gif";
nav_button_4 = new Image(138,18);
nav_button_4.src = "images/nav4-off.gif";
nav_button_5 = new Image(138,18);
nav_button_5.src = "images/nav5-off.gif";
nav_button_6 = new Image(138,18);
nav_button_6.src = "images/nav6-off.gif";
nav_button_7 = new Image(138,18);
nav_button_7.src = "images/nav7-off.gif";
nav_button_8 = new Image(138,18);
nav_button_8.src = "images/nav8-off.gif";
nav_button_9 = new Image(138,18);
nav_button_9.src = "images/nav9-off.gif";


billboard_1_on = new Image(138,100);
billboard_1_on.src = "images/navmsg1.gif";
billboard_2_on = new Image(138,100);
billboard_2_on.src = "images/navmsg2.gif";
billboard_3_on = new Image(138,100);
billboard_3_on.src = "images/navmsg3.gif";
billboard_4_on = new Image(138,100);
billboard_4_on.src = "images/navmsg4.gif";
billboard_5_on = new Image(138,100);
billboard_5_on.src = "images/navmsg5.gif";
billboard_6_on = new Image(138,100);
billboard_6_on.src = "images/navmsg6.gif";
billboard_7_on = new Image(138,100);
billboard_7_on.src = "images/navmsg7.gif";
billboard_8_on = new Image(138,100);
billboard_8_on.src = "images/navmsg8.gif";
billboard_9_on = new Image(138,100);
billboard_9_on.src = "images/navmsg9.gif";
arrow_1 = new Image(22,237);
arrow_1.src = "images/navarw1.gif";
arrow_2 = new Image(22,237);
arrow_2.src = "images/navarw2.gif";
arrow_3 = new Image(22,237);
arrow_3.src = "images/navarw3.gif";
arrow_4 = new Image(22,237);
arrow_4.src = "images/navarw4.gif";
arrow_5 = new Image(22,237);
arrow_5.src = "images/navarw5.gif";
arrow_6 = new Image(22,237);
arrow_6.src = "images/navarw6.gif";
arrow_7 = new Image(22,237);
arrow_7.src = "images/navarw7.gif";
arrow_8 = new Image(22,237);
arrow_8.src = "images/navarw8.gif";
arrow_9 = new Image(22,237);
arrow_9.src = "images/navarw9.gif";
nav_button_1_on = new Image(138,18);
nav_button_1_on.src = "images/nav1-on.gif";
nav_button_2_on = new Image(138,18);
nav_button_2_on.src = "images/nav2-on.gif";
nav_button_3_on = new Image(138,18);
nav_button_3_on.src = "images/nav3-on.gif";
nav_button_4_on = new Image(138,18);
nav_button_4_on.src = "images/nav4-on.gif";
nav_button_5_on = new Image(138,18);
nav_button_5_on.src = "images/nav5-on.gif";
nav_button_6_on = new Image(138,18);
nav_button_6_on.src = "images/nav6-on.gif";
nav_button_7_on = new Image(138,18);
nav_button_7_on.src = "images/nav7-on.gif";
nav_button_8_on = new Image(138,18);
nav_button_8_on.src = "images/nav8-on.gif";
nav_button_9_on = new Image(138,18);
nav_button_9_on.src = "images/nav9-on.gif";
}

function rollover(imgDocID,imgObjName1,imgObjName2,imgObjName3) {
	if (document.images) {
	document.images[imgDocID].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");
}}