if (document.images) {
		give = new Image
		giverollover= new Image
    	advocate = new Image
		advocaterollover = new Image
          volunteer = new Image
		volunteerrollover = new Image
   
		give.src = "images/give.gif"
          giverollover.src = "images/give_ro.gif"
		advocate.src = "images/advocate.gif"
		advocaterollover.src = "images/advocate_ro.gif"
          volunteer.src = "images/volunteer.gif"
		volunteerrollover.src = "images/volunteer_ro.gif"
		}
	
	function chgImg(imgField,newImg) {
		if (document.images) {
			document[imgField].src= eval(newImg + ".src")
		}
	}