/* check to ensure rollovers are supported in browser */
	if (document.images)
	{
	/* preload the images */	
	leftbutton1off = new Image();
	leftbutton1off.src = "pics/fn_btn_home.gif";
	leftbutton1on = new Image();
	leftbutton1on.src = "pics/fn_btn_home_o.gif";	
	
	leftbutton2off = new Image();
	leftbutton2off.src = "pics/fn_btn_products.gif";
	leftbutton2on = new Image();
	leftbutton2on.src = "pics/fn_btn_products_o.gif";	

	
	leftbutton3off = new Image();
	leftbutton3off.src = "pics/fn_btn_architect.gif";
	leftbutton3on = new Image();
	leftbutton3on.src = "pics/fn_btn_architect_o.gif";	

	
	leftbutton4off = new Image();
	leftbutton4off.src = "pics/fn_btn_marketing.gif";
	leftbutton4on = new Image();
	leftbutton4on.src = "pics/fn_btn_marketing_o.gif";	

	leftbutton5off = new Image();
	leftbutton5off.src = "pics/fn_btn_contact.gif";
	leftbutton5on = new Image();
	leftbutton5on.src = "pics/fn_btn_contact_o.gif";	
	
	}
	/* function to set image to on state */
	function On(imageName)
	{
	if (document.images)
	{
	document[imageName].src = eval(imageName+"on.src");
	}
	}
	/* function to reset image back to off state */
	function Off(imageName)
	{
	if (document.images)
	{
	document[imageName].src = eval(imageName+"off.src");
	}
	}