如果选到右边，是无法获取到值的，必须要点击一次，选中了才能获取到，怎么让右边的默认能获取值
sortitems = 1; // Automatically sort items within lists? (1 or 0)function move(fbox,tbox) {for(var i=0; i<fbox.options.length; i++) {if(fbox.options[i].selected && fbox.options[i].value != "") {var no = new Option();no.value = fbox.options[i].value;no.text = fbox.options[i].text;tbox.options[tbox.options.length] = no;fbox.options[i].value = "";fbox.options[i].text = "";}}BumpUp(fbox);if (sortitems) SortD(tbox);}function BumpUp(box) {for(var i=0; i<box.options.length; i++) {if(box.options[i].value == "") {for(var j=i; j<box.options.length-1; j++) {box.options[j].value = box.options[j+1].value;box.options[j].text = box.options[j+1].text;}var ln = i;break; }}if(ln < box.options.length) {box.options.length -= 1;BumpUp(box); }}function SortD(box) {var temp_opts = new Array();var temp = new Object();for(var i=0; i<box.options.length; i++) {temp_opts[i] = box.options[i];}for(var x=0; x<temp_opts.length-1; x++) {for(var y=(x+1); y<temp_opts.length; y++) {if(temp_opts[x].text > temp_opts[y].text) {temp = temp_opts[x].text;temp_opts[x].text = temp_opts[y].text;temp_opts[y].text = temp;temp = temp_opts[x].value;temp_opts[x].value = temp_opts[y].value;temp_opts[y].value = temp; } }}for(var i=0; i<box.options.length; i++) {box.options[i].value = temp_opts[i].value;box.options[i].text = temp_opts[i].text; }} 懒得看代码理解，纯想象
form提交，select只提交选择的option
所以如果要提交list2，要把全部都加设selected属性，或者把option的每个value都赋值一个新控件(例如hidden)来提交
