// JavaScript Document

	function imgSwap(oImg)
	{
	   var strOver  = "-on"    // image to be used with mouse over
	   var strOff = "-off"     // normal image
	   var strImg = oImg.src
	   if (strImg.indexOf(strOver) != -1) 
		  oImg.src = strImg.replace(strOver,strOff)
	   else
		  oImg.src = strImg.replace(strOff,strOver)
	}