function showPic(url,height, width, bu)
{
	document.getElementById('slidepic').src = url;
//	alert(height);
//	alert(width);
	
	if(height > 320)
	{
		document.getElementById('slidepic').height = 320;
		document.getElementById('slidepic').width = width * height / 320;
	}
	else
	{
		document.getElementById('slidepic').height = height;
		document.getElementById('slidepic').width = width ;
	}

	if(bu)
	{
		document.getElementById('slidebu').innerHTML = bu;
		document.getElementById('slidebu').style.visibility = 'visible';
	}
	else
	{
		document.getElementById('slidebu').style.visibility = 'hidden';
	}

	if(height < 320)
	{
		document.getElementById('slidepic').style.borderBottom = '1px solid black';
	}
	else
	{
		document.getElementById('slidepic').style.borderBottom = '0px solid black';
	}
}