function loading()
{
    document.getElementById('loading').style.visibility = 'hidden';
}
function unLoading()
{
    document.getElementById('loading').style.visibility = 'hidden';
}
function dispLoading()
{
	var isIe = false;

	if( window.opera )
	{
		//Opera
	}
	else if( document.all )
	{
		//IE
		isIe = true;
	}
	else if( document.getElementById )
	{
		//Mozilla
	}
	else if( document.layers )
	{
		//NN4
	}
	else
	{
		//?
	}

	var y;
	if( isIe )
	{
		var CANVAS = document[ 'CSS1Compat' == document.compatMode ? 'documentElement' : 'body'];
		y = CANVAS.scrollTop + 200;
	}
	else
	{
		y = window.pageYOffset + 200;
	}
	var top = y + "px";
	document.getElementById( "loading" ).style.top = top;
	document.getElementById( "loading" ).style.visibility = 'visible';
}