// Global variable for canSubmit function.
canSubmitForm = true;


function check(form)
	{

	var doneYet = true;

	doneYet = doneYet && fname(form);

	if (doneYet) doneYet = doneYet && lname(form);

	if (doneYet) doneYet = doneYet && email_address(form);

	if (doneYet) doneYet = doneYet && story(form);
	
	return doneYet && canSubmit(form);
	
	}





// ------------------------------





// ===============================
/* ALWAYS include the canSubmit function. This prevents users from submitting the form more than once. */

function canSubmit(form) {
	// Prevents a user from clicking the submit button twice
	if(canSubmitForm) {
		canSubmitForm = false;
		return true;
	} else {
		return false;
	}
}

// ===============================









// first name
function fname(form)
	{

	if ( (form.fname) && (form.fname.value.length == 0) )
		{
		alert("Please enter your first name.");
		form.fname.focus();
		return false;
		}
	return true;
	}


// last name
function lname(form)
	{

	if ( (form.lname) && (form.lname.value.length == 0) )
		{
		alert("Please enter your last name.");
		form.lname.focus();
		return false;
		}
	return true;
	}


// message
function story(form)
	{

	if ( (form.story) && (form.story.value.length == 0) )
		{
		alert("Please enter a message.");
		form.story.focus();
		return false;
		}
	return true;
	}




// email
function email_address(form)
        {
        /* email removed from filter2  \_\-  \_\- */
        if (form.email_address)
		{
		var filter = /^[A-Za-z0-9][A-Za-z0-9\_\-\.]*\@[A-Za-z0-9][A-Za-z0-9\_\-\.]*\.[A-Za-z]{2,3}$/;
		var filter2 = /^.*[\.\@][\.\@]+.*$/;
		if( (!filter.test( form.email_address.value ))  || ( filter2.test( form.email_address.value )) )
			{
			alert( "Please enter a valid email address." )
			form.email_address.focus();
			return false;
			}
		}
	return true;
	}