function toggleDisplay(divId) {

  var div = document.getElementById(divId);

  div.style.display = (isVisible(div) ? "none" : "block");
}

function setElementDisplay(divId, display) {
	
	var div = document.getElementById(divId);
		
	div.style.display = (display ? "block" : "none");
}

function isVisible(div)
{
	return (div.style.display=="block");
}

function enterKeyHandler(event, linkid) {
	// process only the Enter key
	if (event.keyCode == 13) {
		// cancel the default submit
		event.returnValue = false;
		event.cancel = true;
		// submit the form by programmatically clicking the specified button
		$(linkid).onclick();
	}
}