//Change the state on an element based on the action...
function change(elem, action) 
{
	if (action == 'hide')
		document.getElementById(elem).style.display = 'none';
	else if (action == 'show')
		{document.getElementById(elem).style.display = 'block';}

}



//switch the current state of a specific element.
function doToogle(elem){
	var zDD=document.getElementById('filter_zones').getElementsByTagName('dd');
	var zDT=document.getElementById('filter_zones').getElementsByTagName('dt');	
		zDD[elem].className=(zDD[elem].className=='hideDD')?'showDD':'hideDD';
		zDT[elem].className=(zDT[elem].className=='DTplus')?'DTminus':'DTplus';	
}

function doTheToogle(elem) {
	var el = document.getElementById(elem);
	el.style.display = (el.style.display != 'none' ? 'none' : '' );
}

function swap(id1,id2)
{
	//document.getElementById(id1).innerHTML=document.getElementById(id2).innerHTML;
	document.getElementById(id1).style.display='none';
	document.getElementById(id2).style.display='block';
	document.getElementById('current').value=id2;
}