//here you place the ids of every element you want.
var ids=new Array('a1','a2','a3');

function switchid(id){	
	hideallids();
	showdiv(id);
}

function hideallids(){
	//loop through the array and hide each element by id
	for (var i=0;i<ids.length;i++){
		hidediv(ids[i]);
	}		  
}

function hidediv(id) {
	//safe function to hide an element with a specified id
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'none';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'none';
		}
		else { // IE 4
			document.all.id.style.display = 'none';
		}
	}
}

function showdiv(id) {
	//safe function to show an element with a specified id
		  
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'block';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'block';
		}
		else { // IE 4
			document.all.id.style.display = 'block';
		}
	}
}



//here you place the ids of every tab you want.
var tabs=new Array('tab1','tab2','tab3');

function switchTab(elm){	
	hideallCurrents();
	setCurrent(elm);
}


function hideallCurrents(){
	//loop through the array and hide each tab element by id
	for (var i=0;i<tabs.length;i++){
		setNotCurrent(tabs[i]);
	}		  
}

	
function setNotCurrent(elm)	{
		var obj = document.getElementById(elm);
		obj.className = "not_current";
	}
	
function setCurrent(elm)	{
		var obj = document.getElementById(elm);
		obj.className = "current";
	}