function validateFormOnSubmit(theForm)
{
	
	var reason = "";
	
	reason += validateEmpty(theForm.name);
	if (reason != "")
  	{
  	  	document.getElementById('errmsg').innerHTML = "Error: " + reason;
  	   	return false;
 	}
 	
	reason += validateEmail(theForm.email);
	if (reason != "")
  	{
  	  	document.getElementById('errmsg').innerHTML = "Error: " + reason;
  	   	return false;
 	}
 	
	reason += validateEmpty(theForm.how);
  	if (reason != "")
  	{
  	  	document.getElementById('errmsg').innerHTML = "Error: " + reason;
  	   	return false;
 	}

 	 return true;
}



/* IS EMPTY */
function validateEmpty(fld) {
    var error = "";
  
    if (fld.value.length == 0) {
        fld.style.border = 'solid 1px #E41B17';
        error = "A required field has not been filled in.\n"
    } else {
        fld.style.border = 'solid 1px #7f9db9';
    }
    return error;   
}



/* EMAIL */

function trim(s)
{
  return s.replace(/^\s+|\s+$/, '');
} 

function validateEmail(fld) {
    var error="";
    var tfld = trim(fld.value);                        // value of field with whitespace trimmed off
    var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/ ;
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ;
    
    if (fld.value == "") {
        fld.style.border = 'solid 1px #E41B17';
        error = "You didn't enter an email address.\n";
    } else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        fld.style.border = 'solid 1px #E41B17';
        error = "Please enter a valid email address.\n";
    } else if (fld.value.match(illegalChars)) {
        fld.style.border = 'solid 1px #E41B17';
        error = "The email address contains illegal characters.\n";
    } else {
        fld.style.border = 'solid 1px #7f9db9';
    }
    return error;
}