function setContentById (id, content)
{
	document.getElementById(id).innerHTML = content;
}

function setClassById (id, className)
{
	document.getElementById(id).className = className;
}

function showElementById(id, method)
{
	if (method == null) { method = 'block'; }
	document.getElementById(id).style.display = method;
}

function hideElementById(id)
{
	document.getElementById(id).style.display = 'none';	
}

function disableFormElements(form, state)
{
	for(i=0; i<form.elements.length; i++){
		form.elements[i].disabled = state;
	}
}