function imgSwap(oImg)
{
   var strOver  = "_on"    // image to be used with mouse over
   var strOff = "_off"     // normal image
   var strImg = oImg.src
   if (strImg.indexOf(strOver) != -1) 
      oImg.src = strImg.replace(strOver,strOff)
   else
      oImg.src = strImg.replace(strOff,strOver)
}

function clearText(thefield)
{
	if (thefield.defaultValue == thefield.value)
					thefield.value = ""
	else thefield.value = thefield.defaultValue
}

function getElem(id) {
	if(document.getElementById)
		return document.getElementById(id);
	else if(document.all)
		return document.all[id];
	else if(document.layers)
		return document.layers[id];
}
	
	
function modifyScroll(elem, id) {
//alert('opening');	
	var searchBox = getElem(id);
	if (searchBox.style.display == 'none') {
		imgSwap(elem);
		searchBox.style.display = '';
	} else {
		imgSwap(elem);
		searchBox.style.display = 'none';
		
	}
}