function checkCallBack(namefield, phonefield) {
	namevalue = namefield.value;
	phonevalue = phonefield.value;

	if (namevalue != '' && namevalue != 'Name...' && phonevalue != '' && phonevalue != 'Phone...') {
		return true
	}
	else {
		alert('Please enter your name and your phone number.');
		return false
	}
}

function changeTab(tabname, num) {

	var tab1 = document.getElementById(tabname + 'Tab1');
	var tab1btn = document.getElementById(tabname + 'Tab1Btn');
	var tab2 = document.getElementById(tabname + 'Tab2');
	var tab2btn = document.getElementById(tabname + 'Tab2Btn');

	switch (num) {
		case 1:
			tab1.style.display = 'block';
			tab1btn.style.backgroundImage = 'url(/images/' + tabname + 'Tab1-on.jpg)';
			tab2.style.display = 'none';
			tab2btn.style.backgroundImage = 'url(/images/' + tabname + 'Tab2-off.jpg)';
		break;

		case 2:
			tab2.style.display = 'block';
			tab2btn.style.backgroundImage = 'url(/images/' + tabname + 'Tab2-on.jpg)';
			tab1.style.display = 'none';
			tab1btn.style.backgroundImage = 'url(/images/' + tabname + 'Tab1-off.jpg)';
		break;
	}
}