<div class="Search_control_body_Big_Pop2_wrod_checkbox">
<input type="checkbox" name="test" value="全部" /></div>
</div>
<div class="Search_control_body_Big_Pop2_wrod_checkbox">
<input type="checkbox" name="test" value="B"/></div>
</div> <div class="Search_control_body_Big_Pop2_wrod_checkbox">
<input type="checkbox" name="test" value="C"/></div>
</div>
有3个checkBox ，如果B和C已选的话，点击全部的时候B和C取消，当点B或C其中的一个的时候，全部取消选中，请问该怎么实现呢？？请教高人解答
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head>
<body>
<div class="Search_control_body_Big_Pop2_wrod_checkbox">
<input id="all" type="checkbox" name="test" value="全部" /></div>
</div>
<div class="Search_control_body_Big_Pop2_wrod_checkbox">
<input id="b" type="checkbox" name="test" value="B"/></div>
</div> <div class="Search_control_body_Big_Pop2_wrod_checkbox">
<input id="c" type="checkbox" name="test" value="C"/></div>
</div>
<script type="text/javascript">
var all = document.getElementById('all'),
b = document.getElementById('b'),
c = document.getElementById('c');
all.onclick = function(){
if(b.checked && c.checked){
b.checked = false;
c.checked = false;
}
};
b.onclick = c.onclick = function(){
all.checked = false;
};
</script>
</body>
</html>