UBB编辑控制函数

<script>/* * 功能：UBB编辑控制函数 * 参数: tag 为标签名称　val 为标签参数 * 返回：[标签名称=参数]修饰文字[/标签名称] *       [标签名称]修饰文字[/标签名称] *       [标签名称=参数][/标签名称] */function ubbaction(tag, val){ var tag = tag.toUpperCase(); if(typeof(val) == "undefined"){  val = ""; } if(val){  val = "=" + val; }  var r = document.selection.createRange().text; if(tag == "URL"){  val = prompt("请输入连接地址:(留空为选定地址)", "http://"); if(val !=  "http://" && val != ""){  val = "=" + val; }else{  val = ""; } } if(tag == "MAIL"){  val = prompt("请输入邮箱地址:(留空为选定地址)", ""); if(val != ""){  val = "=" + val; } } rr = "[" + tag + val + "]" + r + "[/" + tag +"]"; if(r){  document.selection.createRange().text = rr; }else{  document.all.content.value += rr; }}</script><form name="form1" method="post" action="">  <input type="button" name="Submit" value="B" onClick="ubbaction('B')">  <input type="button" name="Submit" value="I" onClick="ubbaction('I')">  <input type="button" name="Submit" value="U" onClick="ubbaction('U')">  <select name='ffont' onChange="ubbaction('FONT', this.options[this.selectedIndex].value); this.value = 0;">    <option value='0'>FONT</option>    <option value='Arial' style='font-family:Arial'>Arial</option>    <option value='Times' style='font-family:Times'>Times</option>    <option value='Courier' style='font-family:Courier'>Courier</option>    <option value='Impact' style='font-family:Impact'>Impact</option>    <option value='Geneva' style='font-family:Geneva'>Geneva</option>    <option value='Optima' style='font-family:Optima'>Optima</option>  </select>  <select name='fsize' onChange="ubbaction('SIZE', this.options[this.selectedIndex].value); this.value = 0;">    <option value='0'>SIZE</option>    <option value='1'>Small</option>    <option value='7'>Large</option>    <option value='14'>Largest</option>  </select>  <select name='fcolor' onChange="ubbaction('COLOR', this.options[this.selectedIndex].value); this.value = 0;">    <option value='0'>COLOR</option>    <option value=black style="background-color:black;color:black">Black</option>    <option value=red style="background-color:red;color:red">Red</option>    <option value=yellow style="background-color:yellow;color:yellow">Yellow</option>    <option value=pink style="background-color:pink;color:pink">Pink</option>    <option value=green style="background-color:green;color:green">Green</option>    <option value=orange style="background-color:orange;color:orange">Orange</option>    <option value=purple style="background-color:purple;color:purple">Purple</option>    <option value=blue style="background-color:blue;color:blue">Blue</option>    <option value=beige style="background-color:beige;color:beige">Beige</option>    <option value=brown style="background-color:brown;color:brown">Brown</option>    <option value=teal style="background-color:teal;color:teal">Teal</option>    <option value=navy style="background-color:navy;color:navy">Navy</option>    <option value=maroon style="background-color:maroon;color:maroon">Maroon</option>    <option value=limegreen style="background-color:limegreen;color:limegreen">LimeGreen</option>  </select>  <br><input type="button" name="Submit" value="URL" onClick="ubbaction('URL')">  <input type="button" name="Submit" value="IMG" onClick="ubbaction('IMG')">  <input type="button" name="Submit" value="CODE" onClick="ubbaction('CODE')">  <input type="button" name="Submit" value="MAIL" onClick="ubbaction('MAIL')">  <input type="button" name="Submit" value="QUOTE" onClick="ubbaction('QUOTE')">  <input type="button" name="Submit" value="LIST" onClick="ubbaction('LIST')"> <br>  <textarea name="content" cols="50" rows="8" id="content"></textarea>  <input type="submit" name="Submit" value="提交"></form>