function rollover(tableCell, isOver, colorOver, colorOff)
{
	if (isOver)
		tableCell.style.backgroundColor=colorOver;
	else
		tableCell.style.backgroundColor=colorOff;
}

function SwapImage(imgName) 
{
	imgSrc = document[imgName].src;	
	if (imgSrc.indexOf("_a.gif") > -1)	
		document[imgName].src = imgSrc.substr(0, imgSrc.length - 6) + ".gif";	
	else
		document[imgName].src = imgSrc.substr(0, imgSrc.length - 4) + "_a.gif";	
}

function countChars(field, countfield, maxlimit) 
{
  if (field.value.length > maxlimit)
    field.value = field.value.substring(0, maxlimit);
  else
    countfield.value = maxlimit - field.value.length;
}

function openwindow(page, width, height) 
{
	open(page, '', 'width=' + width + ', height=' + height + ', resizable, scrollbars');
}