function settabs(which)
{
	var btn
	 
	top.topFrame.button1.src="images/b1u.gif"
	top.topFrame.button2.src="images/b2u.gif"
	top.topFrame.button3.src="images/b3u.gif"
	top.topFrame.button4.src="images/b4u.gif"
	top.topFrame.button5.src="images/b5u.gif"
	
	switch (which)
	{
		case 1:
			btn = top.topFrame.button1
			break
		case 2:
			btn = top.topFrame.button2
			break
		case 3:
			btn = top.topFrame.button3
			break
		case 4:
			btn = top.topFrame.button4
			break
		case 5:
			btn = top.topFrame.button5
			break
	}
	btn.src = "images/b" + which + "d.gif"
		
}