var currLayerId = 'text1'; 
function togLayer(id) 
{ 
if(currLayerId) setDisplay(currLayerId, "none"); 
if(id)setDisplay(id, "block"); 
currLayerId = id; 
} 

function setDisplay(id,value) 
{ 
var elm = document.getElementById(id); 
elm.style.display = value; 
} 

var currDivId = null; 
function togDiv(itemId, divId) 
{ 
if(currDivId)ShowPopup(itemId, currDivId, "hidden"); 
if(divId)ShowPopup(itemId, divId, "visible"); 
currDivId = divId; 
}

function ShowPopup(itemId, divId, value)
{
hp = document.getElementById(divId);
// Set popup to visible
hp.style.visibility = value;
// Set position of hover-over popup
hp.style.top = itemId.offsetTop+300;
hp.style.left = itemId.offsetLeft+175;
}

  function swap(imgSrc, audioSrc) {
	document.imgMain.src = imgSrc;
	document.Player.URL= audioSrc;
	document.Player.controls.play();	
  }


function noenter() {
return !(window.event && window.event.keyCode == 13);
}

function nameReset(form) {
	if (form.username.value == '') {
		form.username.value = 'username';
	}
}
function nameDefault(form) {

	if (form.username.value == 'username') {
		form.username.value = '';
	}
}

function passwordReset(form) {
	if (form.password.value == '') {
		form.password.value = 'password';
	}
}
function passwordDefault(form) {

	if (form.password.value == 'password') {
		form.password.value = '';
	}
}

function validRequired(formField,fieldLabel) {
        var result = true;
        if (formField.value == "")      {
                alert('Please enter a value for the "' + fieldLabel +'" field.');
                formField.focus();
                result = false;
        }
        return result;
}

function validateForm(theForm) {

        if (!validRequired(theForm.username,"Username"))
                return false;

        if (!validRequired(theForm.password,"Password"))
                return false;

 return true;
}