如何通过脚本取table的值，谢谢大家帮忙
希望通过脚本循环以下table，得到结果

主要是要取每一行的值，没有值就不取了，xs3 有12，s3有2
"7" Short Zipper xs3/12 s3/2 "
"3/4 Invisible Zipper xs3/12 s3/2 "
"Full Concealed Zipper xs3/12 s3/2 "

<table width= "777 " border= "0 " id= "3 ">
<tr>
<td> &nbsp; </td>
<td> <font face= "Verdana " size= "1 "> XS Qty </font> </td>
<td> <font face= "Verdana " size= "1 "> Small Qty </font> </td>
<td> <font face= "Verdana " size= "1 "> Med Qty </font> </td>
<td> <font face= "Verdana " size= "1 "> Large Qty </font> </td>
</tr>
<tr>
<td> 7&quot; Short Zipper </td>
<td> <font face= "Verdana " size= "1 ">
<input size= "3 " name= "xs3 " onChange= "total(3) " readonly= " " />
</font> </td>
<td> <font face= "Verdana " size= "1 ">
<input size= "3 " name= "s3 " onChange= "total(3) " readonly= " " />
</font> </td>
<td> <font face= "Verdana " size= "1 ">
<input size= "3 " name= "m3 " onChange= "total(3) " readonly= " " />
</font> </td>
<td> <font face= "Verdana " size= "1 ">
<input size= "3 " name= "l3 " onChange= "total(3) " readonly= " " />
</font> </td>
</tr>
<tr>
<td> 3/4 Invisible Zipper </td>
<td> <font face= "Verdana " size= "1 ">
<input size= "3 " name= "xs3 " onChange= "total(3) " readonly= " " />
</font> </td>
<td> <font face= "Verdana " size= "1 ">
<input size= "3 " name= "s3 " onChange= "total(3) " readonly= " " />
</font> </td>
<td> <font face= "Verdana " size= "1 ">