// JavaScript Document

function tabs() {
	var arg = tabs.arguments;
	for(i=1; i<=arg.length-1; i++) {
		document.getElementById(arg[i]).style.display = arg[i+1] ? 'block' : 'none';
		var tabClass = document.getElementById(arg[i]+'_tab').className;
		tabClass = tabClass.split('_');
		document.getElementById(arg[i]+'_tab').className = arg[i+1] ? (tabClass[0]+'_opened') : (tabClass[0]+'_closed');
		i++;
	}
}

function expand_collapse() {
	var arg = expand_collapse.arguments;
	document.getElementById(arg[1]).style.display = document.getElementById(arg[1]).style.display == 'none' ? 'block' : 'none';
	document.getElementById(arg[1]+'_tab').className = document.getElementById(arg[1]).style.display == 'block' ? (arg[2]+'_opened') : (arg[2]+'_closed');
}