请通过javascript实现1~100内能同时被2和3整除的数并生成如下表格；
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
html{height:100%;}
body{margin:0;height:100%;text-align: center;background: #F9F9E0;}
#box{height:100%;display: -webkit-box;-webkit-box-pack:center;-webkit-box-align:center;}
table{border-collapse:collapse;}
th,td{padding:0;}
td{border: 1px solid #429fff; 150px;height:50px;}
</style>
<script type="text/javascript">
window.onload = function(){
var oBox = document.getElementById('box');
var str = '';
var num = 0;
str+="<table>";
for (var i = 1; i <= 100; i++) {
if ( i%6 == 0 ) {
num++;
if (num%4 == 1) {
str += "<tr>";
}
str += "<td>"+i+"</td>";
if (num%4 == 0) {
str += "</tr>";
};
};
};
str += "</table>";
oBox.innerHTML = str;
}
</script>
</head>
<body>
<div id="box">
</div>
</body>
</html>