1.<script language="javascript">function fsubmit(obj){obj.submit();}function freset(obj){obj.reset();}</script><form id="form1" name="form1" method="post" action="login.asp">姓名： <input type="text" name="textfield" /><img src="uploads/200707/30_145425_001.jpg" onClick="javascript:fsubmit(document.form1);"><img src="uploads/200707/30_145428_002.jpg" onClick="javascript:freset(document.form1);"> </form>
2、给1的图片加上style，用于弥补方法1鼠标移到图片上无反应，未能给客户好的浏览体验
<script language="javascript">function fsubmit(obj){obj.submit();}function freset(obj){obj.reset();}</script><form id="form1" name="form1" method="post" action="login.asp">姓名： <input type="text" name="textfield" /><img src="uploads/200707/30_145425_001.jpg" style="cursor:hand;" onClick="javascript:fsubmit(document.form1);"><img src="uploads/200707/30_145428_002.jpg" style="cursor:hand;" onClick="javascript:freset(document.form1);"> </form>
3、用图片代替提交按钮submit和重置按钮reset，并加上链接，效果同2
<script language="javascript">function fsubmit(obj){obj.submit();}function freset(obj){obj.reset();}</script><form id="form1" name="form1" method="post" action="login.asp">姓名： <input type="text" name="textfield" /><a href="javascript:fsubmit(document.form1);"><img src="uploads/200707/30_145425_001.jpg" border="0" /></a><a href="javascript:freset(document.form1);"><img src="uploads/200707/30_145428_002.jpg" border="0" /></a></form>
4、使用图像域。由于默认图像域点击时都是提交表单，因而要进行适当的处理：
<script language="javascript">function fsubmit(obj){obj.submit();}function freset(obj){obj.reset();}</script><form id="form1" name="form1" method="post" action="login.asp">姓名： <input type="text" name="textfield" /><input type="image" name="imageField" onClick="javascript:fsubmit(document.form1);return false;" src="uploads/200707/30_145425_001.jpg"><input type="image" name="imageField2" onClick="javascript:freset(document.form1);return false;" src="uploads/200707/30_145428_002.jpg"></form>
要注意的是JS中表单提交和重置事件后必须加()，如submit()和reset()
5：使用如下方法：
<script language="javascript">function fsubmit(){ var obj=document.getElementById('form1'); if (obj.username.value=='') { alert('请填写用户名'); return false; } }</script><form id="form1" name="form1" method="post" action="login.asp" οnsubmit="return fsubmit()">姓名： <input type="text" name="username" /><input type="image" src="../images/login.gif"></form>
