function showpicgross( pic, maxwidth)
{
	document.images.diagross.src=pic.src;
	var width = pic.width;
	var height = pic.height;
	if (width > height)
	{
		height = Math.round( height * maxwidth/width, 0);
		width = maxwidth;
	}
	else
	{
		width = Math.round( width * maxwidth/height, 0);
		height = maxwidth;
	}
	document.getElementById("diagross").width = width;
	document.getElementById("diagross").height = height;
	document.getElementById("diagrossframe").style.width = width+8+14+"px";
	document.getElementById("diagrossframe").style.height = height+8+"px";
	temp = window.pageYOffset;
	if (!window.pageYOffset)
	{
		temp =0;
	}
	document.getElementById("diagrossframe").style.top = (temp+50)+"px";
	document.getElementById("diagrossframe").style.left = (1000-width-8)/2+"px";
	document.getElementById("diaclose").style.left = (width+7)+"px";
	document.getElementById("darkscreen").style.display="block";
	document.getElementById("diagrossframe").style.display="block";
}