var CurrentClass = '', img, el;

//document.oncontextmenu = function() {return false;};
//document.onselectstart = function() {return false;};
document.ondragstart = function() {return false;};

function isObject( a )
{
	    return (a && typeof a == 'object');
}

function getElements( what )
{
	var el = what.childNodes, l = el.length;

	for( var x = 0; x < l; x++ )
		if( el[x].tagName.toUpperCase( ) == 'IMG' )
		{
			window['img'] = el[x];
			window['el'] = document.getElementById( window['img'].name.replace( '_img', '' ) );
			break;
		}
}


function setState( what )
{
	getElements( what )

	if( window['img'].src.indexOf( '_d.' ) == -1 )
	{
		window['img'].src = window['img'].src.replace( '.gif', '_d.gif' );
		
		if( isObject( window['el'] ) )
			window['el'].value = 0;

		what.className = 'buttonCellDisabled';
		window['CurrentClass'] = 'buttonCellDisabled';
	}
	else
	{
		window['img'].src = window['img'].src.replace( '_d.gif', '.gif' );
		if( isObject( window['el'] ) )
			window['el'].value = 1;

		what.className = 'buttonCellEnabled';
		window['CurrentClass'] = 'buttonCellEnabled';
	}
}

function getState( what )
{
	getElements( what );
	if( window['img'].src.indexOf( '_d.' ) == -1 ) // Image is NIET disabled:
		return true;
	else
		return false;
}

function buttonState( what, state )
{
	if( what.onclick!=null )
		switch( state )
		{
			case 'out':
					what.style.cssText = 'border: 2px groove;';
					what.className = window['CurrentClass'];
				break;
			case 'over':
					window['CurrentClass'] = what.className;
					what.className = 'buttonCellOver';
				break;
			case 'up':
					what.style.cssText = 'border: 2px groove;';
				break;
			case 'down':
					what.style.cssText = 'border: 2px inset;';
					what.className = 'buttonCellMouseDown';
				break;
		}
}

function onpressenter( what, e )
{
	var keycode;
	if( window.event )
		keycode = window.event.keyCode;
	else
		if( e )
			keycode = e.which;

	if( keycode == 13 )
		return true;

	return false;
}

function checked( )
{
	return true;
}

function check( )
{
	return true;
}