<!--
var navi_block_arr=new Array('switch_1','switch_2');

function set_navi_block(n) {
	var _j=null;
	var _selected=0;
	for (j=1;j<=navi_block_arr.length;j++) {
		if (_j=document.getElementById(navi_block_arr[j-1])) {
			if (j!=n) _j.style.display='none';
			else {
				_j.style.display='block';
				_selected=j;
			}
		}
	}
	if (!_selected) _selected=1;
	return false;
}
//-->