function hideTabs(obj) {
	toHide = new Array();
	tabsArr = obj.parentNode.parentNode.getElementsByTagName('li');
	linksArr = obj.parentNode.parentNode.getElementsByTagName('a');
	for (i=0; i<linksArr.length; i++) {
		temp = linksArr[i].href.split("#");
		toHide[i] = temp[1];
		document.getElementById(toHide[i]).style.display="none";
	}
	
	for (i=0; i<tabsArr.length; i++) {
		tabsArr[i].className='';
	}
}

function changeTab(obj) {
	hideTabs(obj);
	blockName = obj.href.split("#");
	blockName = blockName[1];
	document.getElementById(blockName).style.display="block";
	if(obj.parentNode.className=='' && obj.parentNode.nodeName=='LI') obj.parentNode.className="ams_active";
}