function getElementByIDAnyBrowserCode() {
	var evalStatement;
	if (document.getElementById) {
		evalStatement = "return document.getElementById(elementID);";
	} else {
		if (document.layers) {
			evalStatement = "return eval(\"document.all.\" + elementID);";
		} else {
			evalStatement = "return eval(\"document.\" + elementID);";
		}
	}
	return evalStatement;
}
var getElementByIDAnyBrowser = new Function("elementID", getElementByIDAnyBrowserCode());

function disableElement(elementName)
{
	getElementByIDAnyBrowser(elementName).disabled = true;
}
function enableElement(elementName)
{
	getElementByIDAnyBrowser(elementName).disabled = false;
}
function clearElement(elementName)
{
	getElementByIDAnyBrowser(elementName).value = "";
}
function hideElement(elementName)
{
	getElementByIDAnyBrowser(elementName).visibility = "hidden";
	getElementByIDAnyBrowser(elementName).display = "none";
}
function showElement(elementName)
{
	getElementByIDAnyBrowser(elementName).visibility = "visible";
	getElementByIDAnyBrowser(elementName).display = "";
}

function hideRow(elementName)
{
	getElementByIDAnyBrowser(elementName).style.display = "none";
}
function showRow(elementName)
{
	getElementByIDAnyBrowser(elementName).style.display = "";
}