function slightbox(num) {
  var myWidth = 0, myHeight = 0, scrOfX = 0, scrOfY = 0;

  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }

  if( typeof( window.pageYOffset ) == 'number' ) {
    //Netscape compliant
    scrOfY = window.pageYOffset;
    scrOfX = window.pageXOffset;
  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
    //DOM compliant
    scrOfY = document.body.scrollTop;
    scrOfX = document.body.scrollLeft;
  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
    //IE6 standards compliant mode
    scrOfY = document.documentElement.scrollTop;
    scrOfX = document.documentElement.scrollLeft;
  }

  var baseW=myWidth+scrOfX;
  var baseH=2*myHeight+scrOfY;
  
  document.getElementById('darkLayer').style.width=baseW+'px';
  document.getElementById('darkLayer').style.height=baseH+'px';
  document.getElementById('darkLayer').style.display='block';
  
  var lp=parseInt((document.body.clientWidth-500)/2);
  if (lp<0) lp=0;
  document.getElementById('detail'+num).style.left=lp;
  document.getElementById('detail'+num).style.visibility='visible';
}

function hlightbox(num) {
  document.getElementById('darkLayer').style.display='none';
  document.getElementById('detail'+num).style.visibility='hidden';


}