function checkContact()
{
    var rtn = true;

    if(document.getElementById('cntemail').value == '')
    {
        document.getElementById('cntemail').className = 'input_error';
        rtn = false;        
    }
    else
        document.getElementById('cntemail').className = '';
    if(document.getElementById('cntname').value == '')
    {
        document.getElementById('cntname').className = 'input_error';
        rtn = false;
    }
    else
        document.getElementById('cntname').className = '';
    if(document.getElementById('cnttext').value == '')
    {
        document.getElementById('cnttext').className = 'input_error';
        rtn = false;
    }
    else
        document.getElementById('cnttext').className = '';
    if(document.getElementById('security_code').value == '')
    {
        document.getElementById('security_code').className = 'input_error';
        rtn = false;
    }
    else
        document.getElementById('security_code').className = '';
    if(rtn)
    {    
        document.getElementById('frmContact').submit();
    }
    else
    {
        //
    }
}