
<!--

	if (document.images) {
		prbut1a = new Image
		prbut1b = new Image
		prbut2a = new Image
		prbut2b = new Image
		prbut3a = new Image
		prbut3b = new Image
		prbut4a = new Image
		prbut4b = new Image
		prbut5a = new Image
		prbut5b = new Image
		prbut6a = new Image
		prbut6b = new Image
		
		
		prbut1a.src = "images/port_medth_over.jpg"
		prbut1b.src = "images/port_medth.jpg"
		prbut2a.src = "images/port_spanth_over.jpg"
		prbut2b.src = "images/port_spanth.jpg"
		prbut3a.src = "images/port_wineth_over.jpg"
		prbut3b.src = "images/port_wineth.jpg"
		
		prbut4a.src = "images/port_tusth_over.jpg"
		prbut4b.src = "images/port_tusth.jpg"
		prbut5a.src = "images/port_hacth_over.jpg"
		prbut5b.src = "images/port_hacth.jpg"
		prbut6a.src = "images/port_showth_over.jpg"
		prbut6b.src = "images/port_showth.jpg"

	}
	
	function chgImg(imgField,newImg) {
		if (document.images) {
			document[imgField].src=eval(newImg + ".src")
		}
	}

//-->