function Show(layer)
{
document.all[layer].style.visibility = "visible";
document.all[layer].style.display = "";
}

function Hide(layer)
{
document.all[layer].style.visibility = "hidden";
document.all[layer].style.display = "none";
}

function Toggle(layer)
{
	if (document.all[layer].style.visibility == "visible")
	{
		Hide(layer)
	}
	else
	{
		Show(layer)
	}
}


function limitText(limitField, limitCount, limitNum) {
	if (limitField.value.length > limitNum) {
		limitField.value = limitField.value.substring(0, limitNum);
	} else {
		limitCount.value = limitNum - limitField.value.length;
	}
}

function roll_over(img_name, img_src)
	{
	document[img_name].src = img_src;
	}