function toggleDisplay(id) 
   {        
        el = document.getElementById(id);
        
        if ( el.style.display != 'none' ) 
        {
            el.style.display = 'none';
        }
        else 
        {
            el.style.display = '';
        }
    }
    
	function popupCvv()
	{
		var cvvWin = window.open("/store/cvv.htm", "_blank", "scrollbars,resizable,height=460,width=540");
		cvvWin.focus();
	}