/* FORM */

/*
*/
function getValue(id)
{
	var element = document.getElementById(id);
	
	if(element != null)
		return element.value;
	else
		return null;
}

/*
*/
function setValue(id, value)
{
	var element = document.getElementById(id);
	
	if(element != null)
		element.value = value;
}

/*
*/
function submitForm(id)
{
	var element = document.getElementById(id);
	
	if(element != null)
		element.submit();
}


/* NAV */

/*
*/
function goTo(url)
{
	document.location.href = url;
}


/* POPUP */

/*
*/
function popup(url, width, height, center, scrollbars, toolbar, location)
{
	//center
	if(center != false)
		center = true;
	
	//scrollbars
	if(scrollbars != false)
		scrollbars = "yes";
	else
		scrollbars = "no";
	
	//toolbar
	if(toolbar != true)
		toolbar = "no";
	else
		toolbar = "yes";
	
	//address bar
	if(location != true)
		location = "no";
	else
		location = "yes";
		
	var left_pos = ((screen.width - width)   / 2); //px
	var top_pos  = ((screen.height - height) / 2); //px
	
	return window.open(url, "popup", "height=" + height + ", left=" + left_pos + ", location=" + location + ", scrollbars=" + scrollbars + ", toolbar=" + toolbar + ", top=" + top_pos + ", width=" + width);
}