/**
 * @功能 select左右移动实现js
 * @作者 md_java
 * @时间 2010-6-20 
 */

var fromsob,toobj,froms,arry,nowIndex,newoption;
/**
 * @功能 分批添加或删除
 * @输入  formselect 要移动的select;toselect 要移给的select,postionstr 移动指向left OR right
 * @返回 无
 */
function  moveoption(formselect,toselect,postionstr){
 fromsobj=document.getElementById(formselect);
 toobj=document.getElementById(toselect);
if(postionstr=='left'&&fromsobj.options.length==0){//判断是否还有权限
 alert('left is empty');
 return;
}else if(postionstr=='right'&&fromsobj.options.length==0){//判断是否还有权限
 alert('right is empty');
 return;
}

if(postionstr=='left'&&fromsobj.options.selectedIndex==-1){//判断是否选中
alert('please choose left');
return;
}else if(postionstr=='right'&&fromsobj.options.selectedIndex==-1){//判断是否选中
alert('please choose right');
return;
}
froms=fromsobj.options;//获得要移动select的opations
 arry=new Array();
var arr=0;
for(var i=0;i<froms.length;i++){
 if(froms[i].selected==true){
     nowIndex   = toobj.options.length;            //获取将要移动到toselect的options长度   
     newoption = new Option(froms[i].text, froms[i].value,false,false);//copy option
     toobj.options[nowIndex] = newoption;
	 fromsobj
	 arry[arr]=froms[i];//将选中对象缓存如数组 等下删除
	 arr++;
	
 }
}
//删除已被移动的option
for(var a=0;a<arry.length;a++){
   fromsobj.options[arry[a].index]=null;
  }
}


/**
 * @功能 整体移动option全部添加或全部删除
 * @输入  formselect 要移动的select;toselect 要移给的select,postionstr 移动指向left OR right
 * @返回 无
 */
function giveOrUndoAll(formselect,toselect,postionstr){
fromsobj=document.getElementById(formselect);
 toobj=document.getElementById(toselect);
if(postionstr=='left'&&fromsobj.options.length==0){
 alert('left is empty');
 return;
}
if(postionstr=='right'&&fromsobj.options.length==0){
 alert('right is empty');
 return;
}

 froms=fromsobj.options;
for(var i=0;i<froms.length;i++){
      nowIndex   = toobj.options.length;              
     newoption = new Option(froms[i].text, froms[i].value,false,false);
     toobj.options[nowIndex] = newoption;
     }
  fromsobj.innerHTML=null;


}
/**单元素向底部移动*/
function mTop(sid){   
	selectRight=document.getElementById(sid);
    var i = selectRight.options.selectedIndex;
    if(i > 0){   
        Temp_Text=selectRight.options(i).text;   
        Temp_ID=selectRight.options(i).value;   
        for(j=i;j>0;j--){   
            selectRight.options(j).text=selectRight.options(j-1).text;   
            selectRight.options(j).value=selectRight.options(j-1).value;   
        }   
        selectRight.options(0).value=Temp_ID;   
        selectRight.options(0).text=Temp_Text;       
        selectRight.selectedIndex=0;   
    }   
}   
 /**单元素向上移动*/
function  mUp(sid){   
	selectRight=document.getElementById(sid);
    var i = selectRight.options.selectedIndex;   
    var j = i-1   
    if(i>0){   
        Temp_Text = selectRight.options(j).text;   
        Temp_ID = selectRight.options(j).value;   
    
        selectRight.options(j).text = selectRight.options(i).text;   
        selectRight.options(j).value = selectRight.options(i).value;   
    
        selectRight.options(i).text = Temp_Text;   
        selectRight.options(i).value = Temp_ID;   
    
        selectRight.selectedIndex=j;   
    }   
}   
    /**单元素向下移动*/
function  mDown(sid){   
	selectRight=document.getElementById(sid);
    var i = selectRight.options.selectedIndex;
    if (i != selectRight.length-1){   
        var j = i+1;   
        if(i < selectRight.length){   
            Temp_Text = selectRight.options(j).text;   
            Temp_ID = selectRight.options(j).value;   
    
            selectRight.options(j).text = selectRight.options(i).text;   
            selectRight.options(j).value = selectRight.options(i).value;   
    
            selectRight.options(i).text = Temp_Text;   
            selectRight.options(i).value = Tem