//Preload button images
button1on = new Image(); button1off= new Image();
	button1on.src = "images/button_home_mo.gif"; button1off.src = "images/button_home.gif";
button2on = new Image(); button2off= new Image();
	button2on.src = "images/button_rvs_mo.gif"; button2off.src = "images/button_rvs.gif";
button3on = new Image(); button3off= new Image();
	button3on.src = "images/button_snowmobile_mo.gif"; button3off.src = "images/button_snowmobile.gif";
button4on = new Image(); button4off= new Image();
	button4on.src = "images/button_photo_mo.gif"; button4off.src = "images/button_photo.gif";
button5on = new Image(); button5off= new Image();
	button5on.src = "images/button_map_mo.gif"; button5off.src = "images/button_map.gif";
button6on = new Image(); button6off= new Image();
	button6on.src = "images/button_comments_mo.gif"; button6off.src = "images/button_comments.gif";
button7on = new Image(); button7off= new Image();
	button7on.src = "images/button_atvs_mo.gif"; button7off.src = "images/button_atvs.gif";

function changeimage(imgname,setting)
{
	if (document.images)
		document.images[imgname].src = eval(imgname + setting + '.src');
}