function checkall(e) {
	
	if(!e) e = event;	
	et = (e.srcElement)? e.srcElement : e.target;
	
	state = (et.checked)? true : false;
	
	div  = d.getElementById('chkopts');
	chks = div.getElementsByTagName('input');
	
	for( c in chks ) {
		if(chks[c].type=='checkbox') {
			chks[c].checked=state;
		}
	}
	
}