pigga
jquery实现。多级checkbox的联动问题解决办法。注意引入jquery啊。
效果图如下:图片不知道怎么编辑进来,已经上传。可以看看样子。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
<title></title>
<script src="jquery-1.6.2.js" type="text/javascript"></script>
<SCRIPT LANGUAGE="JavaScript" >
<!--
	function checkboxall(){ 

		if($("#oneCheck").attr("checked")=="checked"){	//全选
			$("#oneCheck").attr("checked",true);
			$("input[name=\'checkboxType\']").each(function(){
			   $(this).attr("checked",true);
			 }); 
			 $("input[name=\'checkboxStyle\']").each(function(){
			   $(this).attr("checked",true);
			 }); 
		}else{											//取消全选
			$("#oneCheck").attr("checked",false);
			 $("input[name=\'checkboxStyle\']").each(function(){
			   $(this).attr("checked",false);
			 });
			$("input[name=\'checkboxType\']").each(function(){
			   $(this).attr("checked",false);
			 }); 

		}
		 
	}


	function checkBoxTwo(id){
		var tabId = "sec_"+id;
		var trId = "secid_"+id;
		$("#oneCheck").attr("checked",false);
		if($("#"+trId).attr("checked")=="checked"){
			$("#"+tabId+" :input[type=\'checkbox\']").each(function(){
				$(this).attr("checked",true);
			});
		}else{
			$("#"+tabId+" :input[type=\'checkbox\']").each(function(){
					$(this).attr("checked",false);
			});
		}
	}

	function check(trId){
		var arr = trId.split("_");
		var pid = "#secid_"+arr[1];
		//var tabId = "#sec_"+arr[1];
		$(pid).attr("checked",false);
		$("#oneCheck").attr("checked",false);
		//var len = $(tabId+" :input[type=\'checkbox\']").length;
		//to do continue
	}
//-->
</SCRIPT>
</head>

<body>
	<table>
		<tr>
			<td colspan=\'2\'><input type=\'checkbox\' name=\'checkboxPar\' id = \'oneCheck\' value=\'\' onclick=\'checkboxall();\'>全选</td>
		</tr>

		<tr>
			<td ><input type=\'checkbox\' name=\'checkboxStyle\' id = \'secid_1\' value=\'\'  onclick="checkBoxTwo(\'1\');"></td>
			<td >&nbsp;&nbsp;&nbsp;类别1</td>
		</tr>
	</table>
	<table id = \'sec_1\'>
		<tr>
			<td ><input type=\'checkbox\' name=\'checkboxType\' id = \'thirdId_1_1\' value=\'\' onclick="check(\'thirdId_1_1\');"></td>
			<td >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;类别1的1</td>
		</tr>
		<tr>
			<td ><input type=\'checkbox\' name=\'checkboxType\' id = \'thirdId_1_2\' value=\'\' onclick="check(\'thirdId_1_2\');"></td>
			<td >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;类别1的2</td>
		</tr>
	</table>

	<table>
		<tr>
			<td ><input type=\'checkbox\' name=\'checkboxStyle\' id = \'secid_2\' value=\'\'  onclick="checkBoxTwo(\'2\');"></td>
			<td >&nbsp;&nbsp;&nbsp;类别2</td>
		</tr>
	</table>
	<table id=\'sec_2\'>
		<tr>
			<td ><input type=\'checkbox\' name=\'checkboxType\' id = \'thirdId_2_1\' value=\'\' onclick="check(\'thirdId_2_1\');"></td>
			<td >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;类别2的1</td>
		</tr>
		<tr>
			<td ><input type=\'checkbox\' name=\'checkboxType\' id = \'thirdId_2_2\' value=\' \' onclick="check(\'thirdId_2_2\');"></td>
			<td >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;类别2的2</td>
		</tr>
		<tr>
			<td ><input type=\'checkbox\' name=\'checkboxType\' id = \'thirdId_2_3\' value=\' \' onclick="check(\'thirdId_2_3\');"></td>
			<td >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;类别2的3</td>
		</tr>
	</table>
</body>

解释说明:页面中使用大量的table,除了带有id的两个外,别的只是为了格式需要。
该部分仍不是太完善,没有反向的判断。比如所有三级全部选中,对应的二级也要选中。所有的二级选中,对应的一级也需选中。
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