var subNavId = "subNav";
var tabId = "tab";
var tabAId = "tabA"
function subNav(a,status) {
	var oSubNav= document.getElementById(subNavId+a);
	oSubNav.style.display =status;
	}
// ======================================================//
function tabs(a) {
	for (i = 1;i<=4;i++) {
	var n = document.getElementById(tabId+i);
	var oA = document.getElementById(tabAId+i);
	n.style.display="none";
	oA.className = "";
	oA.parentNode.className = "";
	//alert(n);
	}
	var y = document.getElementById(tabId+a);
	var oANow = document.getElementById(tabAId+a);
	y.style.display="block";
	oANow.className = "now";
	oANow.parentNode.className = "now";
	}