function HideShow(strDivName){
	isNS4 = (document.layers) ? true : false;
	isIE4 = (document.all && !document.getElementById) ? true : false;
	isIE5 = (document.all && document.getElementById) ? true : false;
	isNS6 = (!document.all && document.getElementById) ? true : false;
	if (isNS4) {
		objDiv = document.layers['div_' + strDivName];
		objImage = document.layers['img_' + strDivName];
	}
	else if (isIE4) {
		objDiv = document.all['div_' + strDivName];
		objImage = document.all['img_' + strDivName];
	}
	else if (isIE5 || isNS6) {
		objDiv = document.getElementById('div_' + strDivName);
		objImage = document.getElementById('img_' + strDivName);
	}
	if(objDiv.style.display == "none") {
		objDiv.style.display = "block";
		objImage.src = "Images/Down.gif";
	} 
	else {
		objDiv.style.display = "none";
		objImage.src = "Images/Up.gif";
	}
	return;
}