function moveUp( obj, outputObj )
{
    myInstance = document.getElementById( obj );
   
    var selected = myInstance.selectedIndex;
    
    if(selected==-1)
        alert("Select an item to order first.");
    else if(selected>0)
    {
        
        var temp = myInstance.options[selected-1].text;
        myInstance.options[selected-1].text = myInstance.options[selected].text;
        myInstance.options[selected].text = temp;
        var temp = myInstance.options[selected-1].value;
        myInstance.options[selected-1].value = myInstance.options[selected].value;
        myInstance.options[selected].value = temp;
        var temp = myInstance.options[selected-1].realno;
        myInstance.options[selected-1].realno = myInstance.options[selected].realno;
        myInstance.options[selected].realno = temp;        

        myInstance.selectedIndex--;
    }
    setItemList( obj, outputObj );
}
function moveDown( obj, outputObj )
{
    myInstance = document.getElementById( obj );
    
    var selected = myInstance.selectedIndex;

    if(selected==-1)
        alert("Select an item to order first.");
    else if(selected<myInstance.options.length-1)
    {
        var temp = myInstance.options[selected+1].text;
        myInstance.options[selected+1].text = myInstance.options[selected].text;
        myInstance.options[selected].text = temp;
        var temp = myInstance.options[selected+1].value;
        myInstance.options[selected+1].value = myInstance.options[selected].value;
        myInstance.options[selected].value = temp;
        var temp = myInstance.options[selected+1].realno;
        myInstance.options[selected+1].realno = myInstance.options[selected].realno;
        myInstance.options[selected].realno = temp;
        
        myInstance.selectedIndex++;
    }
    setItemList( obj, outputObj );
}

function setItemList( obj, outputObj )
{
    var myInstance = document.getElementById( obj );
    var list = "";

    for (n=0;n<myInstance.length;n++)
    {
        list = list + myInstance.options[n].value;
        
        if(n<myInstance.length-1){
            list = list + ",";
        }
    }
    document.getElementById(outputObj).value = list;
}