if (document.images) {
//main nav
	nav1 = new Image;		nav1a = new Image;
	nav2 = new Image;		nav2a = new Image;
	nav3 = new Image;		nav3a = new Image;
	nav4 = new Image;		nav4a = new Image;
	nav5 = new Image;		nav5a = new Image;
	nav6 = new Image;		nav6a = new Image;
	nav7 = new Image;		nav7a = new Image;
	nav8 = new Image;		nav8a = new Image;
	nav9 = new Image;		nav9a = new Image;
	nav10 = new Image;		nav10a = new Image;
	home = new Image;		homea = new Image;
	
	nav1.src = "gfx/nav1_2.gif"; nav1a.src = "gfx/nav1a.gif";
	nav2.src = "gfx/nav2_2.gif"; nav2a.src = "gfx/nav2a.gif";
	nav3.src = "gfx/nav3_2.gif"; nav3a.src = "gfx/nav3a.gif";
	nav4.src = "gfx/nav4_2.gif"; nav4a.src = "gfx/nav4a.gif";
	nav5.src = "gfx/nav5_2.gif"; nav5a.src = "gfx/nav5a.gif";
	nav6.src = "gfx/nav6_2.gif"; nav6a.src = "gfx/nav6a.gif";
	nav7.src = "gfx/nav7_2.gif"; nav7a.src = "gfx/nav7a.gif";
	nav8.src = "gfx/nav8_2.gif"; nav8a.src = "gfx/nav8a.gif";
	nav9.src = "gfx/nav9_2.gif"; nav9a.src = "gfx/nav9a.gif";
	nav10.src = "gfx/nav10_2.gif"; nav10a.src = "gfx/nav10a.gif";
	home.src = "gfx/home.gif"; homea.src = "gfx/homea.gif";
	
function chgImg(imgField,newImg) {
	if (document.images) {
		document[imgField].src= eval(newImg + ".src")
		}
	}
}