function displayText(tdButtonID, tdTextID, causeValidation)
    {    
        try
        {
            if (causeValidation == "True"){
                if (typeof(Page_ClientValidate) == 'function'){
                    Page_ClientValidate();
                }
            
                if (Page_IsValid) 
                {
                    var tdB = document.getElementById(tdButtonID);
                    var tdT = document.getElementById(tdTextID);
                    
                    tdB.style.display = 'none';      
                    tdB.style.visibility = 'hidden';
                    tdT.style.display = 'block';
                    tdT.style.visibility = 'visible';
                }        
            }
        }
        catch(e)
        {
        }
    }
    
    function displayButton(tdButtonID, tdTextID)
    {    
        try
        {  
            var tdB = document.getElementById(tdButtonID);
            var tdT = document.getElementById(tdTextID);
                    
            tdB.style.display = 'block';      
            tdB.style.visibility = 'visible';
            tdT.style.display = 'none';
            tdT.style.visibility = 'hidden';
            
        }
        catch(e)
        {
        }
    }