// JavaScript Document

var previousTab = '';
var previousPanel = '';
function activateTab(x,y){
//global previousTab;
if(previousTab!=x){
		document.getElementById(x).className='active';
		document.getElementById(y).style.display='block';
	}	
	if((previousTab!='')&&(previousTab!=x)){
		document.getElementById(previousTab).className='';
		document.getElementById(previousPanel).style.display='none';
		//alert(previousTab);
	}
	previousTab = x;
	previousPanel = y;
}