________javascript的
方法1：
<script language= "javascript ">
function xxx()
{
//var txt1=document.getElementById( "txtAttachment ");
alert( "xx ");
//txt1.value= "xxx ";
//lbox.options[lbox.selectedIndex].value=document.getElementById( "file1 ").FileName;
}
</script>

<input name= "btnAddAttachment " type= "button " id= "btnAddAttachment " onclick= "xxx() " value= "添加 " />

方法2：

<input name= "btnAddAttachment " type= "button " id= "btnAddAttachment " onclick= "alert( 'xx ') " value= "添加 " />

为什么方法1不可以，2就可以，1错在哪？

谢谢！

[解决办法]
方法一正常执行