var eurOFF = "/images/button-eur-usd.gif";
  var eurON = "/images/button-eur-usd-over.gif";
  var gbpOFF = "/images/button-gbp-usd.gif";
  var gbpON = "/images/button-gbp-usd-over.gif";
  var chfOFF = "/images/button-usd-chf.gif";
  var chfON = "/images/button-usd-chf-over.gif";
  var jpyOFF = "/images/button-usd-jpy.gif";
  var jpyON = "/images/button-usd-jpy-over.gif";
  var eurchart = "http://www.futuresource.com/iFS/thumbchart.asp?cID=GFT&sym=FXEUUSMUL&AGG=D&W=240&DENSITY=medium&H=200&HEADER=FALSE&TYPE=AREA";
  var gbpchart = "http://www.futuresource.com/iFS/thumbchart.asp?cID=GFT&sym=FXBPUSMUL&AGG=D&W=240&DENSITY=medium&H=200&HEADER=FALSE&TYPE=AREA";
  var chfchart = "http://www.futuresource.com/iFS/thumbchart.asp?cID=GFT&sym=FXUSSFMUL&AGG=D&W=240&DENSITY=medium&H=200&HEADER=FALSE&TYPE=AREA";
  var jpychart = "http://www.futuresource.com/iFS/thumbchart.asp?cID=GFT&sym=FXUSJYMUL&AGG=D&W=240&DENSITY=medium&H=200&HEADER=FALSE&TYPE=AREA";

function clearselection() {
  document.images['eurmap'].src=eurOFF;
  document.images['gbpmap'].src=gbpOFF;
  document.images['chfmap'].src=chfOFF;
  document.images['jpymap'].src=jpyOFF;
}

function reFresh(whichmap,myImg){
       if (document.images) {
			clearselection();
			document.images[whichmap].src=myImg;
       }
       if (myImg == eurchart) {
          document.images['eurmap'].src=eurON;
	}
       if (myImg == gbpchart) {
          document.images['gbpmap'].src=gbpON;
	}
       if (myImg == chfchart) {
          document.images['chfmap'].src=chfON;
	}
       if (myImg == jpychart) {
          document.images['jpymap'].src=jpyON;
	}
}