html页面高度自适应
本文实现的效果是依据浏览器分辨率的不同。页面底端背景色自适应浏览器高度，也就是能够自己主动填充背景色。
<script type="text/javascript">
function height_adaptive(){
var main=$(document).height();
var title=document.getElementById("login_title").scrollHeight;
var body=document.getElementById("login_body").scrollHeight;
var bottom=main-title-body;
$("#login_bottom").height(bottom);
}
</script>
<BODY >
<form method="post" action="login.action" name="frm" >
<div >
<span >mindray | OR Digital System</span>
</div>
<div >
<div align="left" class="login_head">
<img >
</div>
<table cellspacing="10px" style="padding-top:278px">
<tr>
<td><input type="text" /></td>
</tr>
<tr>
<td><input type="password" /></td>
</tr>
<tr>
<td align="left"><img
onmousedown="rem_mousedown()" onmouseup="rem_mouseup()">
<span > Remember me</span></td>
</tr>
</table>
</div>
<div >
<br />
<button type="button" >Log in</button>
</div>
</FORM>
</BODY>