function setsidebarheight()
{
	document.getElementById ("sidebar").style.height = document.getElementById ("contentarea").offsetHeight + "px";
}
//====================================================================================
function checkcontactform(form)
{
	if (form.realname.value.length == 0)
	{	alert ("Please provide your name.");
		form.realname.focus();
	}
	else if (form.email.value.length == 0)
	{
		alert ("Please provide an email address.");
		form.email.focus();
	}
	else if (form.message.value.length == 0)
	{
		alert ("Please provide your message.");
		form.message.focus();
	}
	else
		form.submit();
}
//====================================================================================
function checkpartnerform(form)
{
	if (form.realname.value.length == 0)
	{	alert ("Please provide your name.");
		form.realname.focus();
	}
	else if (form.email.value.length == 0)
	{
		alert ("Please provide an email address.");
		form.email.focus();
	}
	else if (form.websitetitle.value.length == 0)
	{
		alert ("Please provide the title of your website.");
		form.websitetitle.focus();
	}
	else if (form.websiteurl.value.length == 0)
	{
		alert ("Please provide the URL of your website.");
		form.websiteurl.focus();
	}
	else if (form.linklocation.value.length == 0)
	{
		alert ("Please provide the URL of the web page where you've linked us.");
		form.linklocation.focus();
	}
	else
		form.submit();
}
//====================================================================================
function checkguestbookform(form)
{
	if (form.message.value.length == 0)
	{
		alert ("Please provide your message.");
		form.message.focus();
	}
	else
		form.submit();
}
//====================================================================================
function checknewsletterform(form)
{
	if (form.email.value == "")
	{
		alert ("Please provide your email address.");
		form.email.focus();
		return false;
	}
	else
		return true;
}
//====================================================================================
function writeformaddress()
{
	var a1 = 'pianomail';
	var a2 = 'piano-lessons-master-teachers';
	var a3 = 'com';
	var a4 = a1 + '@' + a2 + '.' + a3;
	document.write ( '<input type="hidden" name="recipient" value="' + a4 + '">' );
}