复选框单选

	function checkBoxStrike(obj)
	{
	    var checks = document.getElementsByName("cheBoxName");
	    if(obj.checked)
	    {	
	        for(var i=0;i<checks.length;i++){
	            checks[i].checked = false;
	        }
	        obj.checked = true;    
	    }else		
	    {
	        for(var i=0;i<checks.length;i++){
	            checks[i].checked = false;
	        }
	    }
	}

<td><input type="checkbox" value="${aList.annId?default("is null")}" name="cheBoxName" onclick="checkBoxStrike(this)" }"/></td>