function swapNavbarImg(oImg, strName, bOn)
{
	try
	{
		oImg.src = "images/navbar/"+strName+(bOn?"-on":"")+".gif";
	}
	catch(excpt)
	{
	}
}
function swapSubnavbarImg(oImg, strName, bOn)
{
	try
	{
		oImg.src = "images/subnavbar/"+strName+(bOn?"-on":"")+".gif";
	}
	catch(excpt)
	{
	}
}
function swapImage(oImg, strName, bOn)
{
	try
	{
		oImg.src = "images/"+strName+(bOn?"-on":"")+".gif";
	}
	catch(excpt)
	{
	}
}
function swapHomeImg(oImg, strName, bOn)
{
	//try
	{
		if (typeof(oImg)=="object")
			oImg = document.getElementById("id_"+strName);
		oImg.src = "images/homes/"+strName+(bOn?"-on":"")+".gif";
	}
	//catch(excpt)
	{
	}
}
function isEmpty(str)
{
	return str.search(/[^ \t\r\n]+/)==-1;
}
function onSubmitMessage(oForm)
{
	if (isEmpty(oForm.elements["Name"].value))
	{
		alert("Please enter your name!");
		oForm.elements["Name"].focus();
		return false;
	}
	
	if (isEmpty(oForm.elements["Email_Address"].value))
	{
		alert("Please enter your email address!");
		oForm.elements["Email_Address"].focus();
		return false;
	}
	
	return true;
}