1.页面的HTML代码如下: <img id="flag" src="Flags/cn_flag[1].gif" alt="" /> <select name="Country" accesskey="c" id="Country" onchange="change_flag(this);" runat="server" o> <option value="AR">Argentina</option> <option value="AM">Armenia</option> <option value="AU">Australia</option> <option value="AT">Austria</option> <option value="BA">Bosnia and Herzegovina</option> <option value="BD">Bangladesh</option> <option value="BY">Belarus</option> <option value="BE">Belgium</option> <option value="BG">Bulgaria</option> <option value="BO">Bolivia</option> <option value="BW">Botswana</option> <option value="BR">Brazil</option> <option value="BG">Bulgaria</option> <option value="CA">Canada</option> <option value="CL">Chile</option> <option value="CN" selected="selected">China</option> <option value="CO">Colombia</option> <option value="CR">Costa Rica</option> <option value="HR">Croatia</option> <option value="CU">Cuba</option> <option value="CZ">Czech Republic</option> <option value="DK">Denmark</option> <option value="EC">Ecuador</option> <option value="EG">Egypt</option> <option value="EE">Estonia</option> <option value="FI">Finland</option> <option value="FR">France</option> <option value="DE">Germany</option> <option value="GB">Great Britain</option> <option value="UK">United Kingdom</option> <option value="GE">Georgia</option> <option value="GR">Greece</option> <option value="HK">Hong Kong</option> <option value="HU">Hungary</option> <option value="IS">Iceland</option> <option value="IN">India</option> <option value="ID">Indonesia</option> <option value="IE">Ireland</option> <option value="IL">Israel</option> <option value="IT">Italy</option> <option value="JP">Japan</option> <option value="JO">Jordan</option> <option value="KZ">Kazakhstan</option> <option value="KG">Kyrgyzstan</option> <option value="LA">Laos</option> <option value="LV">Latvia</option> <option value="LT">Lithuania</option> <option value="LU">Luxembourg</option> <option value="MA">Morocco</option> <option value="MY">Malaysia</option> <option value="MT">Malta</option> <option value="MX">Mexico</option> <option value="NG">Nigeria</option> <option value="NL">Netherlands</option> <option value="NZ">New Zealand</option> <option value="NO">Norway</option> <option value="OM">Oman</option> <option value="PA">Panama</option> <option value="PK">Pakistan</option> <option value="PE">Peru</option> <option value="PH">Philippines</option> <option value="PL">Poland</option> <option value="PT">Portugal</option> <option value="QA">Qatar</option> <option value="RO">Romania</option> <option value="RU">Russia</option> <option value="SA">Saudi Arabia</option> <option value="SN">Senegal</option> <option value="SG">Singapore</option> <option value="SK">Slovakia</option> <option value="SI">Slovenia</option> <option value="ZA">South Africa</option> <option value="KR">South Korea</option> <option value="ES">Spain</option> <option value="LK">Sri Lanka</option> <option value="SR">Suriname</option> <option value="SE">Sweden</option> <option value="CH">Switzerland</option> <option value="TW">Taiwan</option> <option value="TH">Thailand</option> <option value="TN">Tunisia</option> <option value="TR">Turkey</option> <option value="UA">Ukraine</option> <option value="UK">United Kingdom</option> <option value="US">United States</option> <option value="UY">Uruguay</option> <option value="VE">Venezuela</option> <option value="VN">Vietnam</option> <option value="VU">Vanuatu</option> <option value="ZM">Zambia</option> </select>2.change_flag函数 <script> function change_flag( object ){ var img = document.getElementById("flag"); if( img ){ img.src = "Flags/" + object.value +"_flag[1].gif"; } } </script>在线演示http://img.jb51.net/online/guoqi/Flags.html打包下载http://img.jb51.net/online/guoqi/guoqi.rar

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