function checkFormContact()
{
    var rtn = true;

    if((document.getElementById('cntemail').value == '') || (!checkEmail(document.getElementById('cntemail').value)))
    {
        document.getElementById('cntemail').className = 'input_error';
        rtn = false;        
    }
    else
        document.getElementById('cntemail').className = '';
    if(document.getElementById('cntphone').value == '')
    {
        document.getElementById('cntphone').className = 'input_error';
        rtn = false;
    }
    else
        document.getElementById('cntphone').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
    {
        return false;
    }
}

function checkEmail(inputvalue){	
    var pattern=/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
    if(pattern.test(inputvalue)){         
		return true;   
    }else{   
		return false; 
    }
}