ListBox的操作

   主要实现功能是将ListBox1中的选择项移动到ListBox2中：
  

 1 function  moveOption(e1, e2,type)
 2                  {
 3                    if( type == 'part' )
 4                    {
 5                        for(var i=0;i<e1.options.length;i++)
 6                        {
 7                            if(e1.options[i].selected)
 8                            {
 9                                var e = e1.options[i];
10                                e2.options.add(new Option(e.text, e.value));
11                                e1.remove(i);
12                                i=i-1
13                            }
14                        }
15                    }
16                    
17                    if( type == 'all' )
18                    {
19                        for(var i=0;i<e1.options.length;i++)
20                        {
21                            var e = e1.options[i];
22                            e2.options.add(new Option(e.text, e.value));
23                            e1.remove(i);
24                            i=i-1
25                        }
26                    }
27                    document.all.HiddenprjA.value = getvalue( document.all.lbprjnameA );
28                    document.all.HiddenprjB.value = getvalue( document.all.lbprjnameB );
29                }
30                 
31                  function  getvalue(listContrl) {
32                var allvalue = "";
33                for(var i=0;i<listContrl.options.length;i++){
34                allvalue +=listContrl.options[i].value + ",";
35                }
36                return allvalue;
37                }

   说明：e1，e2分别是ListBox1和ListBox2，type指的是是否全部移动，当然，要保存到数据库中还是需要在后台写一部分代码的。