function show(tab, text) {
document.getElementById('pizza_text').style.display='none';
document.getElementById('pizza_text').style.height='0';
document.getElementById('description').style.color='#666666';
document.getElementById('description').style.background='#FFFFFF';
document.getElementById('description').style.borderColor='#CCCCCC';
document.getElementById('features').style.color='#666666';
document.getElementById('features').style.background='#FFFFFF';
document.getElementById('features').style.borderColor='#CCCCCC';
document.getElementById('applications').style.color='#666666';
document.getElementById('applications').style.background='#FFFFFF';
document.getElementById('applications').style.borderColor='#CCCCCC';
document.getElementById('links').style.color='#666666';
document.getElementById('links').style.background='#FFFFFF';
document.getElementById('links').style.borderColor='#CCCCCC';
document.getElementById('description_text').style.display='none';
document.getElementById('description_text').style.height='0';
document.getElementById('features_text').style.display='none';
document.getElementById('features_text').style.height='0';
document.getElementById('applications_text').style.display='none';
document.getElementById('applications_text').style.height='0';
document.getElementById(tab).style.color='#FFFFFF';
document.getElementById(tab).style.background='#CCCCCC';
document.getElementById(tab).style.borderColor='#999999';
document.getElementById(text).style.display='block';
document.getElementById(text).style.height='';
}