function Feedback()
{
    if(IsEmptyText("ctl00_content_txtName"))
    {
        alert("Please enter your name");
        return false;
    }
    
    if(!IsEmailText("ctl00_content_txtEmail"))
    {
        alert("Please enter valid Email");
        return false;
    }
    
    if(IsEmptyText("ctl00_content_txtFeedback"))
    {
        alert("Please enter your feedback");
        return false;
    }
    
    return true;
}

function valComment()
{
    if(IsEmptyText("ctl00_content_txtName"))
    {
        alert("Please enter your name");
        return false;
    }
    
    if(!IsEmailText("ctl00_content_txtEmail"))
    {
        alert("Please enter valid Email");
        return false;
    }
    
    return true;
}