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<a id="saveButton" href="#" onclick="javascript:startUpload();">Upload !!</a>
<a id="saveButton" href="#" onclick="javascript:startUpload();">Upload !!</a>会出现手形鼠标当光标移动到link
<a id="saveButton" onclick="javascript:startUpload();">Upload !!</a>不会出现手形鼠标当光标移动到link
1<a id="saveButton" href=javascript:startUpload();">Upload !!</a>
<a id="saveButton" href=javascript:startUpload();">Upload !!</a>若在startUpload()中有 return false, 点击link后仍会继续执行.