function lightbox(picname,lbwidth,lbheight)
{
/*lbleft= string((document.body.offsetWidth - number(lbwidth))/2) + "px" 
alert(lbleft)*/
document.getElementById('light').style.width=lbwidth; 
document.getElementById('light').style.height=lbheight; 
document.getElementById('light').style.left='25%';
document.displaypic.src = picname;
document.getElementById('light').style.display='block';document.getElementById('fade').style.display='block';
}

function closelightbox()
{
   document.displaypic.src = "spacer.gif";
   document.getElementById('light').style.display='none';document.getElementById('fade').style.display='none';
}