if(document.images)
{
	var home_1 = new Image(); home_1.src = "/images/bt_home_1.gif";
	var home_2 = new Image(); home_2.src = "/images/bt_home_2.gif";
	var home_3 = new Image(); home_3.src = "/images/bt_home_3.gif";
	
	var cont_1 = new Image(); cont_1.src = "/images/bt_cont_1.gif";
	var cont_2 = new Image(); cont_2.src = "/images/bt_cont_2.gif";
	var cont_3 = new Image(); cont_3.src = "/images/bt_cont_3.gif";
	
	var site_1 = new Image(); site_1.src = "/images/bt_site_1.gif";
	var site_2 = new Image(); site_2.src = "/images/bt_site_2.gif";
	var site_3 = new Image(); site_3.src = "/images/bt_site_3.gif";
	
	//subnav
	var history_1 = new Image(); history_1.src = "/images/sbt_pro_hist_1.gif";
	var history_2 = new Image(); history_2.src = "/images/sbt_pro_hist_2.gif";
	var history_3 = new Image(); history_3.src = "/images/sbt_pro_hist_3.gif";
	
	var awards_1 = new Image(); awards_1.src = "/images/sbt_pro_award_1.gif";
	var awards_2 = new Image(); awards_2.src = "/images/sbt_pro_award_2.gif";
	var awards_3 = new Image(); awards_3.src = "/images/sbt_pro_award_3.gif";
	
	var staff_1 = new Image(); staff_1.src = "/images/sbt_pro_staff_1.gif";
	var staff_2 = new Image(); staff_2.src = "/images/sbt_pro_staff_2.gif";
	var staff_3 = new Image(); staff_3.src = "/images/sbt_pro_staff_3.gif";
	
	var assist_1 = new Image(); assist_1.src = "/images/sbt_port_assist_1.gif";
	var assist_2 = new Image(); assist_2.src = "/images/sbt_port_assist_2.gif";
	var assist_3 = new Image(); assist_3.src = "/images/sbt_port_assist_3.gif";
	
	var eccles_1 = new Image(); eccles_1.src = "/images/sbt_port_eccles_1.gif";
	var eccles_2 = new Image(); eccles_2.src = "/images/sbt_port_eccles_2.gif";
	var eccles_3 = new Image(); eccles_3.src = "/images/sbt_port_eccles_3.gif";
	
	var ed_1 = new Image(); ed_1.src = "/images/sbt_port_ed_1.gif";
	var ed_2 = new Image(); ed_2.src = "/images/sbt_port_ed_2.gif";
	var ed_3 = new Image(); ed_3.src = "/images/sbt_port_ed_3.gif";
	
	var public_1 = new Image(); public_1.src = "/images/sbt_port_public_1.gif";
	var public_2 = new Image(); public_2.src = "/images/sbt_port_public_2.gif";
	var public_3 = new Image(); public_3.src = "/images/sbt_port_public_3.gif";
	
	var retail_1 = new Image(); retail_1.src = "/images/sbt_port_retail_1.gif";
	var retail_2 = new Image(); retail_2.src = "/images/sbt_port_retail_2.gif";
	var retail_3 = new Image(); retail_3.src = "/images/sbt_port_retail_3.gif";
	 
	//misc
	var back_1 = new Image(); back_1.src = "/images/portfolio/bt_back_1.gif";
	var back_2 = new Image(); back_2.src = "/images/portfolio/bt_back_2.gif";
	
	var next_1 = new Image(); next_1.src = "/images/portfolio/bt_next_1.gif";
	var next_2 = new Image(); next_2.src = "/images/portfolio/bt_next_2.gif";
	
	var close_1 = new Image(); close_1.src = "/images/portfolio/bt_close_1.gif";
	var close_2 = new Image(); close_2.src = "/images/portfolio/bt_close_2.gif";
}

function imgSwap(imgName,newImg,winStat)
{
	if (document.images)
	{
		document.images[imgName].src = eval(newImg + ".src");
		window.status = winStat;
	}
}