function tab(tabid) {
	hide('prod_messages');
	if (tabid == 'information') {
		hide('request_glasses');
		document.getElementById('request_glasses_bar').className = '';
		document.getElementById('request_glasses_tab').className = '';
		document.getElementById('request_glasses_tab').innerHTML = '<a href="javascript:tab(\'request_glasses\');" title="Request 3-D Glasses">Request 3-D Glasses</a>';
		hide('tell_a_friend');
		document.getElementById('tell_a_friend_bar').className = '';
		document.getElementById('tell_a_friend_tab').className = '';
		document.getElementById('tell_a_friend_tab').innerHTML = '<a href="javascript:tab(\'tell_a_friend\');" title="Tell a friend about Southwest Crossroads">Tell a Friend</a>';
		show('information');
		document.getElementById('outer_form').className = '';
		document.getElementById('information_bar').className = 'active';
		document.getElementById('information_tab').className = 'active';
		document.getElementById('information_tab').innerHTML = 'Southwest Crossroads in 3-D';
	}
	if (tabid == 'request_glasses') {
		hide('information');
		document.getElementById('information_bar').className = '';
		document.getElementById('information_tab').className = '';
		document.getElementById('information_tab').innerHTML = '<a href="javascript:tab(\'information\');" title="Southwest Crossroads in 3-D">Southwest Crossroads in 3-D</a>';
		hide('tell_a_friend');
		document.getElementById('tell_a_friend_bar').className = '';
		document.getElementById('tell_a_friend_tab').className = '';
		document.getElementById('tell_a_friend_tab').innerHTML = '<a href="javascript:tab(\'tell_a_friend\');" title="Tell a friend about Southwest Crossroads">Tell a Friend</a>';
		show('request_glasses');
		document.getElementById('outer_form').className = 'contenttabs';
		document.getElementById('request_glasses_bar').className = 'active';
		document.getElementById('request_glasses_tab').className = 'active';
		document.getElementById('request_glasses_tab').innerHTML = 'Request 3-D Glasses';
	}
	if (tabid == 'tell_a_friend') {
		hide('information');
		document.getElementById('information_bar').className = '';
		document.getElementById('information_tab').className = '';
		document.getElementById('information_tab').innerHTML = '<a href="javascript:tab(\'information\');" title="Southwest Crossroads in 3-D">Southwest Crossroads in 3-D</a>';
		hide('request_glasses');	
		document.getElementById('request_glasses_bar').className = '';
		document.getElementById('request_glasses_tab').className = '';
		document.getElementById('request_glasses_tab').innerHTML = '<a href="javascript:tab(\'request_glasses\');" title="Request 3-D Glasses">Request 3-D Glasses</a>';
		show('tell_a_friend');
		document.getElementById('outer_form').className = 'contenttabs';
		document.getElementById('tell_a_friend_bar').className = 'active';
		document.getElementById('tell_a_friend_tab').className = 'active';
		document.getElementById('tell_a_friend_tab').innerHTML = 'Tell a Friend';
	}
}

function tell_a_friend_submit() {
	var tell_a_friend_friends_name = document.getElementById('tell_a_friend_friends_name').value;
	var tell_a_friend_friends_email = document.getElementById('tell_a_friend_friends_email').value;
	var tell_a_friend_senders_name = document.getElementById('tell_a_friend_senders_name').value;
	var tell_a_friend_senders_email = document.getElementById('tell_a_friend_senders_email').value;
	if (tell_a_friend_friends_name == '' || tell_a_friend_friends_email == '' || tell_a_friend_senders_name == '' || tell_a_friend_senders_email == '') {
		alert('Please fill in all required fields.');
	}
	else{
		document.getElementById('mode').value = 'tell_a_friend';
		document.outer_form.submit();
	}
}
	
function glasses_request_submit() {
	var glasses_request_first_name = document.getElementById('glasses_request_first_name').value;
	var glasses_request_last_name = document.getElementById('glasses_request_last_name').value;
	var glasses_request_address_1 = document.getElementById('glasses_request_address_1').value;
	var glasses_request_city = document.getElementById('glasses_request_city').value;
	var glasses_request_state = document.getElementById('glasses_request_state').value;
	var glasses_request_zip = document.getElementById('glasses_request_zip').value;
	var glasses_request_email = document.getElementById('glasses_request_email').value;
	var glasses_request_confirm_email = document.getElementById('glasses_request_confirm_email').value;
	if (glasses_request_first_name == '' || glasses_request_last_name == '' || glasses_request_address_1 == '' || glasses_request_city == '' || glasses_request_state == '' || glasses_request_zip == '' || glasses_request_email == '' || glasses_request_confirm_email == '') {
		alert('Please fill in all required fields.');
	}
	else if (glasses_request_email != glasses_request_confirm_email) {
		alert('Please confirm email address.');
	}
	else {
		document.getElementById('mode').value = 'glasses_request';
		document.outer_form.submit();
	}
}


function hide(idname) {
	document.getElementById(idname).style.display = 'none';
}

function show(idname) {
	document.getElementById(idname).style.display = 'block';
}

function swxTextareaLength(id,char_length) {
	var line_height = 17;
	var default_length = 70;
	if (!char_length) {
		char_length = default_length;
	}
	var height;
	if (document.getElementById(id).value.length > char_length) {
		height = (Math.ceil(((document.getElementById(id).value.length)/char_length))*line_height);
	}
	else {
		height = line_height;
	}
	var breaks = document.getElementById(id).value.split("\n");
	if (breaks.length > 1) {
		height = height + line_height * (breaks.length - 1)
	}
	document.getElementById(id).style.height = height+"px";
}