[blacklordi]

неработает

зделал так:

<script type="text/javascript">           
            var checkboxes = document.getElementById('content-wrapper').getElementsByTagName("input");
            checkboxes[0].onclick = function() {
			    if(checkboxes[0].checked == true) {
					for (var i = 1; i <= 8; i++) {
						if (i==2) 
							checkboxes[i].checked = true
						else {
							checkboxes[i].checked = false
							checkboxes[i].disabled = true
						}
					}
				} else 
					for (var i = 1; i <= 8; i++) {
						checkboxes[i].checked = false
						checkboxes[i].disabled = false
					}
			}
        </script>