请帮着看一下。谢谢。
在输入文本时，为什么无法改变颜色，字体等功能。总是说缺少对象。请帮着看一下
<form name=form1 method = "post " action= "txlsadd.jsp " onsubmit= "return checks() ">
<table width= "747 " height= "549 " border= "1 ">
<tr>
<td width= "55 " align=right bgcolor= "#f1f1f1 " height= "65 "> <img src= "/bwl/images/images/lwcontent.gif " width= "41 " height= "42 "> </td>
<td width= "538 " bgcolor= "#e1ebba "> <b> 通讯录内容 </b> </td>
</tr>
<tr>
<td height= "42 "bgcolor= "#f1f1f1 ">
<div align= "right "> 标题： </div> </td>
<td bgcolor= "#e1ebba "> <input name= "title " type= "text " size= "40 " maxlength= "100 ">
<b> <font color= "#FF0000 "> 必填 </font> </b> </td>
</tr>
<tr>
<td height= "52 " valign=top bgcolor= "#f1f1f1 "> <div align= "right "> 正文： </div> </td>
<td bgcolor= "#e1ebba ">
<select name= "selectFont " id= "select " onChange= "setFont(this.options[this.selectedIndex].value) ">
<option selected> 选择字体 </option>
<option value= "宋体 "> 宋体 </option>
<option value= "黑体 "> 黑体 </option>
<option value= "隶书 "> 隶书 </option>
<option value= "幼圆 "> 幼圆 </option>
<option value= "仿宋_GB2312 "> 仿宋_GB2312 </option>
<option value= "Arial "> Arial </option>
<option value= "Times New Roman "> Times New Roman </option>
</select>
<select name= "selectSize " id= "select2 " onChange= "setSize(this.options[this.selectedIndex].value) ">
<option selected> 字体大小 </option>
<option value= "6 "> 6 </option>
<option value= "8 "> 8 </option>
<option value= "10 "> 10 </option>
<option value= "12 "> 12 </option>
<option value= "14 "> 14 </option>
<option value= "18 "> 18 </option>
<option value= "24 "> 24 </option>
<option value= "36 "> 36 </option>
</select>
<select name= "selectColor " id= "select3 " onChange= "setColor(this.options[this.selectedIndex].value) ">
<option value= " " selected> 选择颜色 </option>
<option value= "red "> 红色 </option>
<option value= "blue "> 蓝色 </option>
<option value= "yellow "> 黄色 </option>
<option value= "green "> 绿色 </option>
</select>
<br>
<a href= "javascript: " onClick= "addBold() "> <img src= "images/ubb/bold.gif " alt= "字体加粗 " width= "20 " height= "20 " border= "0 "> </a> <a href= "javascript: " onClick= "addEm() "> <img src= "images/ubb/italic.gif " alt= "字体倾斜 " width= "20 " height= "20 " border= "0 "> </a> <img src= "images/ubb/separator.gif " width= "6 " height= "20 "> <a href= "javascript: " onClick= "addLeft() "> <img src= "images/ubb/left.gif " alt= "字体左对齐 " width= "20 " height= "20 " border= "0 "> </a> <a href= "javascript: " onClick= "addCenter() "> <img src= "images/ubb/center.gif " alt= "字体居中 " width= "20 " height= "20 " border= "0 "> </a> <a href= "javascript: " onClick= "addRight() "> <img src= "images/ubb/right.gif " alt= "字体靠右 " width= "20 " height= "20 " border= "0 "> </a> <img src= "images/ubb/separator.gif " width= "6 " height= "20 "> <a href= "javascript: " onClick= "addimages() "> <img src= "images/ubb/image.gif " alt= "引用外部图片 " width= "20 " height= "20 " border= "0 "> </a> <img src= "images/ubb/date.gif " alt= "插入日期 " width= "20 " height= "20 "> <img src= "images/ubb/separator.gif " width= "6 " height= "20 "> <a href= "javascript: " onClick= "addQuote() "> <img src= "images/ubb/quote.gif " alt= "插入引用 " width= "20 " height= "20 " border= "0 "> </a> <a href= "javascript: " onClick= "addURL() "> <img src= "images/ubb/link.gif " alt= "加入超链接 " width= "20 " height= "20 " border= "0 "> </a> <a href= "javascript: " onClick= "addEmail() "> <img src= "images/ubb/email.gif " alt= "插入Email " width= "20 " height= "20 " border= "0 "> </a>
<p>
<p>
<textarea name= "content " cols= "75 " rows= "13 " class= "form " id= "textarea " wrap= "VIRTUAL " style= "background-color:#E4E4E4 "> </textarea>
</td>
<br>
</tr>
<tr>
[解决办法]
代码贴完了吗
setFont setColor setSize。。。。这些function都没有定义
