document.getElementsByTagName('td')[0]
.onclick = function() {
document.getElementsByTagName('td')[5].style.display="none";
document.getElementsByTagName('td')[6].style.display="none";
document.getElementsByTagName('td')[7].style.display="none";
document.getElementsByTagName('td')[9].style.display="none";
document.getElementsByTagName('td')[10].style.display="none";
document.getElementsByTagName('td')[11].style.display="none";		
document.getElementsByTagName('td')[1].style.display="inline";
document.getElementsByTagName('td')[2].style.display="inline";
document.getElementsByTagName('td')[3].style.display="inline";	
return false; 
};