if (document.images) {
//level rollovers
lvl_nav_1 = new Image()
lvl_nav_1.src = "images/lv_nav_01.gif"
lvl_nav_1_o = new Image()
lvl_nav_1_o.src = "images/lv_nav_01_o.gif"
lvl_nav_2 = new Image()
lvl_nav_2.src = "images/lv_nav_02.gif"
lvl_nav_2_o = new Image()
lvl_nav_2_o.src = "images/lv_nav_02_o.gif"
lvl_nav_3 = new Image()
lvl_nav_3.src = "images/lv_nav_03.gif"
lvl_nav_3_o = new Image()
lvl_nav_3_o.src = "images/lv_nav_03_o.gif"
lvl_nav_4 = new Image()
lvl_nav_4.src = "images/lv_nav_04.gif"
lvl_nav_4_o = new Image()
lvl_nav_4_o.src = "images/lv_nav_04_o.gif"
lvl_nav_5 = new Image()
lvl_nav_5.src = "images/lv_nav_05.gif"
lvl_nav_5_o = new Image()
lvl_nav_5_o.src = "images/lv_nav_05_o.gif"
//side nav rollovers
sp_nav = new Image()
sp_nav.src = "images/lv_snav_off_sp.gif"
sp_nav_o = new Image()
sp_nav_o.src = "images/lv_snav_on_sp.gif"
bpt_nav = new Image()
bpt_nav.src = "images/lv_snav_off_bpt.gif"
bpt_nav_o = new Image()
bpt_nav_o.src = "images/lv_snav_on_bpt.gif"
sbp_nav = new Image()
sbp_nav.src = "images/lv_snav_off_sbp.gif"
sbp_nav_o = new Image()
sbp_nav_o.src = "images/lv_snav_on_sbp.gif"
}

function RollOver(img1,ref1) {
	if (document.images) {
		document.images[img1].src = eval(ref1 + ".src")
	}
}

function nav(id){
	if(document.getElementById(id).className=='nav_item_off'){
		document.getElementById(id).className='nav_item_on';
	}else{
		document.getElementById(id).className='nav_item_off';
	}
}