//define rollover function; controls highlights of buttons and message display in status bar
function rollOver(loc, img, msg){
	document[loc].src = img;
	window.top.status = msg;
}


  //javascript navigation to avoid HREF and HOVER tags
function directURL (page){
	this.location = page;
}


  //pop-up window controls for info-only window
function popWin (page){
	infoWindow = open(page, "info", "location=no,status=no,scrollbars=yes,resizable=yes,width=500,height=600");
}


  //image swapping control
function imgChange(loc, img){
	document[loc].src = img;
}