var last_cd = 0;

function popRow(cd) {
  var req = createXMLHttpReqObj();
  var loc = '/catalog/includes/home_category.php?coid='+cd;
  var imageOff = '/catalog/images/cat_off.gif';
	var imageOn = '/catalog/images/cat_on.gif';
  var ajaxSnip = '<img src="/images/shared/clear.gif" width="1" height="1" alt="" />';
  if( last_cd != 0 ) {
	   document.getElementById('cat_row_'+last_cd).innerHTML = ajaxSnip;
	   document.getElementById('cat_row_'+last_cd).className = "ajaxSpace";
	   document.getElementById('cat_image_'+last_cd).src = imageOff;
	   document.getElementById('cat_link_'+last_cd).className = "storeCatOff";		 
  }
  if( last_cd != cd ) {
    req.open('GET',loc , false);
    req.send(null);
       if(req.status == 200){
         ajaxSnip = req.responseText;
			 }
      last_cd = cd;	
	  document.getElementById('cat_link_'+cd).className = "storeCatOn";
    document.getElementById('cat_row_'+cd).innerHTML = ajaxSnip;
	  document.getElementById('cat_row_'+cd).className = "na";
	  document.getElementById('cat_image_'+last_cd).src = imageOn;		
  } else if( last_cd = cd ) {
	  last_cd = 0;
	  document.getElementById('cat_link_'+cd).className = "storeCatOff";
    document.getElementById('cat_row_'+cd).innerHTML = ajaxSnip;
	  document.getElementById('cat_row_'+cd).className = "ajaxSpace";		
	  if( last_cd != 0 ) {
		  document.getElementById('cat_image_'+last_cd).src = imageOff;  }		
	}
	
	return 0;		  				
}