function addItem(source,target){
    for(var x=0;x<source.length;x++){
        var opt = source.options[x];
        if (opt.selected){
             source.options[x]=null;
            for (var y=0;y<target.length;y++){
                var myopt = target.options[y];
            }
            target.options[target.options.length] = new Option(opt.text, opt.value, 0, 0);
        }
    }
}

function addItemAll(source,target){
    for(var x=0;x<source.length;x++){
        var opt = source.options[x];
        for (var y=0;y<target.length;y++){
          var myopt = target.options[y];
        }
        target.options[target.options.length] = new Option(opt.text, opt.value, 0, 0);
      }
    for(var x=source.length-1;x>=0;x--){
        source.options[x]=null;
    }
}

function delItem(source,target){
    for(var x=target.length-1;x>=0;x--){
        var opt = target.options[x];
        if (opt.selected){
            target.options[x] = null;
            for(var y=0;y<source.length;y++){
                var myopt =source.options[y]
            }
            source.options[source.options.length] =new Option(opt.text,opt.value,0,0);
        }
     }
}