function CheckRequiredFields() {
var errormessage = new String();

if(WithoutContent(document.sessionform.email.value))
	{ errormessage += "\n\nNo email address entered."; }
if(WithoutContent(document.sessionform.realname.value))
	{ errormessage += "\n\nInclude your name."; }
if(WithoutSelectionValue(document.sessionform.instrument))
	{ errormessage += "\n\nSelect an instrument from the dropdown list."; }
if(WithoutContent(document.sessionform.about.value))
	{ errormessage += "\n\nPlease let us know what you can do including as much information as possible."; }

if(errormessage.length > 2) {
	alert('NOTE:' + errormessage);
	return false;
	}
return true;
}


function WithoutContent(ss) {
if(ss.length > 0) { return false; }
return true;
}

function NoneWithContent(ss) {
for(var i = 0; i < ss.length; i++) {
	if(ss[i].value.length > 0) { return false; }
	}
return true;
}

function NoneWithCheck(ss) {
for(var i = 0; i < ss.length; i++) {
	if(ss[i].checked) { return false; }
	}
return true;
}

function WithoutCheck(ss) {
if(ss.checked) { return false; }
return true;
}

function WithoutSelectionValue(ss) {
for(var i = 0; i < ss.length; i++) {
	if(ss[i].selected) {
		if(ss[i].value.length) { return false; }
		}
	}
return true;
}