// JavaScript Document


function toggleNav(objID) {
	if (!document.getElementById) return;

	var ob = document.getElementById(objID).style;
	ob.display = (ob.display == 'block')?'none': 'block';

	var head = document.getElementById("header_" + objID)
	
	if (ob.display == 'block')
		head.innerHTML = head.innerHTML.replace("[+]","[-]")
	else
		head.innerHTML = head.innerHTML.replace("[-]","[+]")
}