<!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>
<title>無標題頁</title>
</head>
<body>
<!--作爲編輯區的iframe-->
<iframe style="width: 100%; height:100" marginwidth="0" marginheight="0" frameborder="1" id="MsgFrame" src="about:blank"></iframe>
<br />
<input type="button" οnclick="t('UnderLine')" value="下劃線" />
<input type="button" οnclick="t('bold')" value="粗體" id="Button1" />
<input type="button" οnclick="t('JustifyLeft')" value="左對齊" />
<input type="button" οnclick="t('JustifyCenter')" value="居中對齊" />
<input type="button" οnclick="t('JustifyRight')" value="右對齊" />
<input type="button" οnclick="t2()" value="增高" />
<input type="button" οnclick="t3()" value="減少" />
<input type="button" οnclick="ViewSource()" value="查看源代碼" />
<script type="text/javascript" language="javascript">
//使iframe進入編輯狀態。
var editor;
editor = document.getElementById("MsgFrame").contentWindow;
//window.frames["MsgFrame"].document.designMod
editor.document.open();
editor.document.writeln('<html><head>');
editor.document.writeln("</head><body></body></html>");
editor.document.onclick = "alert()";
editor.document.close();
editor.document.designMode = 'On';
editor.document.contentEditable = true;
editor.document.charset="gb2312";
function t(s)
{
editor.document.execCommand(s,false,null);
}
//增高
function t2(){
var obj=window.frames["MsgFrame"].frameElement;
var height = parseInt(obj.offsetHeight);//獲取iframe的高度
if (height+100 >= 100){
obj.height = height+100;
}
}
//減低
function t3(){
var obj=window.frames["MsgFrame"].frameElement;
var height = parseInt(obj.offsetHeight);
if (height-100 >= 100){
obj.height = height-100;
}
}
function ViewSource(){
document.getElementById("textarea1").value = document.getElementById("MsgFrame").contentWindow.document.body.innerHTML;
}
</script>
<br/>
</body>
</html>