var offSrc="";

var headImg;

var headOffSrc;



function roll(daImg,daSrc) {

	offSrc=daImg.src;

	daImg.src=daSrc;

}



function rollOff(daImg) {

	daImg.src=offSrc;

	

}



function rollCol(daImg,daSrc,daHeadImg,newHeadSrc) {

	offSrc=daImg.src;

	

	headImg = document.images[daHeadImg];

	headOffSrc = headImg.src;

	daImg.src = daSrc;

	headImg.src=newHeadSrc;

}



function rollColOff(daImg) {

	daImg.src=offSrc;

	headImg.src=headOffSrc;

}

function popWindow(aUrl) {

	eval("window.open ('"+aUrl+"', 'newWin', 'scrollbars=yes,status=yes,toolbar=yes,resizable=yes,width=465,height=400,dependent=yes,screenX=100,screenY=100')");

}

function popWindowBig(aUrl) {

	eval("window.open ('"+aUrl+"', 'newWin', 'scrollbars=no,status=yes,toolbar=no,resizable=no,width=640,height=496,dependent=yes,screenX=20,screenY=20')");

}
function isEmailAddr(email)
{
  var result = false;
  var theStr = new String(email);
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}