
<!--

	if (document.images) {
		navbut1a = new Image
		navbut1b = new Image
		navbut2a = new Image
		navbut2b = new Image
		navbut3a = new Image
		navbut3b = new Image
		navbut4a = new Image
		navbut4b = new Image
		navbut5a = new Image
		navbut5b = new Image
		navbut6a = new Image
		navbut6b = new Image
		navbut7a = new Image
		navbut7b = new Image
		navbut8a = new Image
		navbut8b = new Image
		navbut9a = new Image
		navbut9b = new Image
		navbut10a = new Image
		navbut10b = new Image

		
		navbut1a.src = "images/nav_port.gif"
		navbut1b.src = "images/nav_port_over.gif"
		navbut2a.src = "images/nav_exh.gif"
		navbut2b.src = "images/nav_exh_over.gif"
		navbut3a.src = "images/nav_res.gif"
		navbut3b.src = "images/nav_res_over.gif"
		navbut4a.src = "images/nav_search.gif"
		navbut4b.src = "images/nav_search_over.gif"
		navbut5a.src = "images/nav_contact.gif"
		navbut5b.src = "images/nav_contact_over.gif"
		navbut6a.src = "images/nav_spaint.gif"
		navbut6b.src = "images/nav_spaint_over.gif"
		navbut7a.src = "images/nav_sstudies.gif"
		navbut7b.src = "images/nav_sstudies_over.gif"
		navbut8a.src = "images/nav_photo.gif"
		navbut8b.src = "images/nav_photo_over.gif"
		navbut9a.src = "images/nav_prints.gif"
		navbut9b.src = "images/nav_prints_over.gif"
		navbut10a.src = "images/nav_crit.gif"
		navbut10b.src = "images/nav_crit_over.gif"
		
	}
	
	function chgImg(imgField,newImg) {
		if (document.images) {
			document[imgField].src=eval(newImg + ".src")
		}
	}

//-->