function addEvent ( obj, evType, fn, useCapture )
{
	//alert ( "setting event type " + evType + " function: " + fn.name );
	if ( obj.addEventListener )
	{
		// stop gap measure to prevent Firefox from ignoring 'on' events when returning false
		if ( evType == 'submit' )
		{
			obj['on' + evType] = fn;
		}
		obj.addEventListener ( evType, fn, useCapture );
	}
	else if ( obj.attachEvent )
	{
		return obj.attachEvent ( 'on' + evType, fn );
	}
	else
	{
		obj['on' + evType] = fn;
	}
	return false;
}

function removeEvent(obj, evType, fn, useCapture )
{
	if ( obj.removeEventListener )
	{
		// stop gap measure to prevent Firefox from ignoring 'on' events when returning false
		if ( evType == 'submit' )
		{
			obj['on' + evType] = null;
		}
		obj.removeEventListener(evType,fn,useCapture);
		return false;
	}
	else if ( obj.detachEvent )
	{
		obj.detachEvent( 'on' + evType, fn );
	}
	else
	{
		obj['on' + evType] = null;
	}
		
}

function stopEvent (e)
{
	if (!e)
	{
		var e = window.event;
	}
	e.cancelBubble = true;
	if (e.stopPropagation)
	{e.stopPropagation();}
	if (e.preventDefault)
	{e.preventDefault();}
	else
	{window.event.returnValue=false;}
	return false;
}

function addClass ( object, classname )
{
	if ( object != null )
	{
		var myClass = object.className;
		if ( myClass.indexOf ( classname ) == -1 )
		{
			myClass += ' ' + classname;
		}
		object.className = myClass;
	}
}

function removeClass ( object, classname )
{
	if ( object != null )
	{
		var myClass = "";
		var tmpClass = object.className;
		if ( tmpClass != null )
		{
			var myNames = tmpClass.split ( " " );
			var j = 0;
			for ( var i = 0; i < myNames.length; i++ )
			{
				if ( myNames[i] != classname )
				{
					if ( j++ == 0 )
					{
						myClass += myNames[i];
					}
					else
					{
						myClass += " " + myNames[i];
					}
				}
			}
		}
		object.className = myClass;
	}
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