Question

document.getElementById（）.styl.display的问题

求助。帮我看看，
老是错误 为空或不是对象
(document.getElementById(id).style.display = '';)
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<SCRIPT type=text/javascript>
var siteUrl = "//";
function aiyz_setTab(area,id) {
var tabArea = document.getElementById(area);
var contents = tabArea.childNodes;
for (i=0; i<contents.length; i++) {
if (contents[i].className=='tabContent') { contents[i].style.display = 'none';}
}
document.getElementById(id).style.display = '';

var tabs = document.getElementById(area+'Tabs').getElementsByTagName('a');
for (i=0; i<tabs.length; i++) { tabs[i].className = ''; }
document.getElementById('tab'+id).className = 'xqNewsbg';
}
</SCRIPT>

Answer 1

'hideDiv':function (divId) {
document.getElementById(divId).style.display = "none";
},

'showDiv':function (divId) {
document.getElementById(divId).style.display = "block";
},