function isEmailAddr(email)
{
var result = false;
var theStr = new String(email);
var index = theStr.indexOf("@");
if (index > 0)
{
var pindex = theStr.indexOf(".",index);
if ((pindex > index+1) && (theStr.length > pindex+1))
result = true;
}
return result;
}

function validRequired(formField,fieldLabel)
{
var result = true;
if (formField.value == "")
{
    alert('Please enter a value for the "' + fieldLabel +'" field.');
    formField.focus();
    result = false;
}
return result;
}

function validEmail(formField,fieldLabel,required)
{
var result = true;
if (required && !validRequired(formField,fieldLabel))
result = false;
if (result && ((formField.value.length < 3) || !isEmailAddr(formField.value)) )
{
    alert("Please enter a complete email address in the form: yourname@yourdomain.com");
    formField.focus();
    result = false;
}
return result;
}


function validNum(formField,fieldLabel,required)
{
var result = true;
if (required && !validRequired(formField,fieldLabel))
result = false;
if (result)
{
var num = parseInt(formField.value);
if (isNaN(num))
{
alert('Please enter a number for the "' + fieldLabel +'" field.');
formField.focus();    
result = false;
}
} 
return result;
}

function validDate(formField,fieldLabel,required)
{
var result = true;
if (required && !validRequired(formField,fieldLabel))
result = false;
if (result)
{
var elems = formField.value.split("/");
result = (elems.length == 3); // should be three components
if (result)
{
var month = parseInt(elems[0]);
var day = parseInt(elems[1]);
var year = parseInt(elems[2]);
result = !isNaN(month) && (month > 0) && (month < 13) &&
            !isNaN(day) && (day > 0) && (day < 32) &&
            !isNaN(year) && (elems[2].length == 4);
}
if (!result)
{
alert('Please enter a date in the format MM/DD/YYYY for the "' + fieldLabel +'" field.');
formField.focus();    
}
} 
return result;
}


function validateForm20(theForm)
{
// Start ------->
if (!validEmail(theForm.email,"Email Address",true))
return false;
// <--------- End
return true;
}


function validateForm(theForm)
{
if (!validRequired(theForm.name,"Name"))
return false;
if (!validEmail(theForm.email,"Email Address",true))
return false;
if (!validRequired(theForm.comments,"Comments"))
return false;
return true;
}