i have this code, im using jquery which im not very familiar and i need help please:D

<html>
<head>
<title>Select and drag?</title>
<style type='text/css'>
body,html {
    color:#333;
    font-family:Calibri;
    font-size:11px;
}
.panel {float:left;width:200px;margin:20px;}

ul {
    list-style-type:none;
    border:1px solid #999;
    background:#ccc;
    padding:20px;
    min-height:150px;
    width:100px;
	}

li {
    display:block;
    border:1px solid #999;
    background:#fff;
    width:80px;
    padding:5px 10px;
    margin-bottom:5px;
}

.dds_selected {
    background:#ffc;
}
.dds_ghost {
    opacity:0.5;
}
.dds_move {
    background:#cfc;
}
.dds_hover {
    background:#fc9;
    border:3px dashed #c96;
}

.holder {
    border:3px dashed #333;
    background:#fff;
}

</style>
<script type="text/javascript" src="jquery-1.3.2.min.js"></script>
<script type="text/javascript" src="jquery-ui-1.7.1.custom.min.js"></script>


<script type='text/javascript'>
/**
 *   Multi-Select And Drag
 *  
 *   Not elegant solution to this problem, but the problem, despite being easily 
 *   desribed is not simple. This code is more a proof of concept, but should be
 *   extendable by anyone with the time / inclination, there I grant permission 
 *   for it to be re-used in accodance with the MIT license:
 *
 *   Copyright (c) 2009 Chris Walker (http://thechriswalker.net/)
 *
 *   Permission is hereby granted, free of charge, to any person obtaining a copy
 *   of this software and associated documentation files (the "Software"), to deal
 *   in the Software without restriction, including without limitation the rights
 *   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *   copies of the Software, and to permit persons to whom the Software is
 *   furnished to do so, subject to the following conditions:
 *
 *   The above copyright notice and this permission notice shall be included in
 *   all copies or substantial portions of the Software.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *   THE SOFTWARE.
 */
 
(function($){
    $.fn.drag_drop_selectable = function( options ){
        $.fn.captureKeys();
        var $_this = this;
        var settings = $.extend({},$.fn.drag_drop_selectable.defaults,options||{});
        return $(this).each(function(i){
            var $list = $(this);
            var list_id = $.fn.drag_drop_selectable.unique++;
            $.fn.drag_drop_selectable.stack[list_id]={"selected":[ ],"all":[ ]};//we hold all as well as selected so we can invert and stuff...
            $list.attr('dds',list_id);
            $.fn.drag_drop_selectable.settings[list_id] = settings;
            $list.find('li')
            //make all list elements selectable with click and ctrl+click.
            .each(function(){
                var $item = $(this);
                //add item to list!
                var item_id = $.fn.drag_drop_selectable.unique++;
                $item.attr('dds',item_id);
                $.fn.drag_drop_selectable.stack[list_id].all.push(item_id);
                $(this).bind('click.dds_select',function(e){
                    if($.fn.isPressed(CTRL_KEY) || ($.fn.drag_drop_selectable.stack[$.fn.drag_drop_selectable.getListId( $(this).attr('dds') )].selected.length == 1 && $(this).hasClass('dds_selected'))){
                        //ctrl pressed add to selection
                        $.fn.drag_drop_selectable.toggle(item_id);
                    }else{
                        //ctrl not pressed make new selection
                        $.fn.drag_drop_selectable.replace(item_id);
                    }
                }).bind('dds.select',function(){
                    $(this).addClass('dds_selected').addClass( $.fn.drag_drop_selectable.settings[$.fn.drag_drop_selectable.getListId($(this).attr('dds'))].selectClass );
                    
                }).bind('dds.deselect',function(){
                    $(this).removeClass('dds_selected').removeClass( $.fn.drag_drop_selectable.settings[$.fn.drag_drop_selectable.getListId($(this).attr('dds'))].selectClass );;
                }).css({cursor:'pointer'});
            })
            //OK so they are selectable. now I need to make them draggable, in such a way that they pick up their friends when dragged. hmmm how do I do that?
            .draggable({
                 helper:function(){
                    $clicked = $(this);
                    if( ! $clicked.hasClass('dds_selected') ){
                        //trigger the click function.
                        $clicked.trigger('click.dds_select');
                    }
                    var list = $.fn.drag_drop_selectable.getListId($clicked.attr('dds'));
                    var $helper = $('<div dds_list="'+list+'"><div style="margin-top:-'+$.fn.drag_drop_selectable.getMarginForDragging( $clicked )+'px;" /></div>').append( $.fn.drag_drop_selectable.getSelectedForDragging( $clicked.attr('dds') ) );
                        $.fn.drag_drop_selectable.getListItems( list ).filter('.dds_selected').addClass($.fn.drag_drop_selectable.settings[list].ghostClass);
                    return $helper;
                 },
                 distance:5, //give bit of leeway to allow selecting with click.
                 revert:'invalid',
                 cursor:'move',
                 stop:function(e, ui){
                    var list = $.fn.drag_drop_selectable.getListId($clicked.attr('dds'));
                    $.fn.drag_drop_selectable.getListItems( list ).filter('.dds_selected').removeClass($.fn.drag_drop_selectable.settings[list].ghostClass);
                 }
            });
            $list.droppable({
                drop:function(e,ui){ 
                    var oldlist = parseInt(ui.helper.attr('dds_list'));
                    ui.helper.find('li.dds_selected').each(function(){
                        var iid = parseInt( $(this).attr('dds_drag') );
                        $.fn.drag_drop_selectable.moveBetweenLists( iid, oldlist, list_id );
                    });
                    
                    //now call callbacks!
                    if( $.fn.drag_drop_selectable.settings[oldlist] && typeof($.fn.drag_drop_selectable.settings[oldlist].onListChange) == 'function'){
                        setTimeout(function(){ $.fn.drag_drop_selectable.settings[oldlist].onListChange( $('ul[dds='+oldlist+']') ); },50);
                    }
                    if( $.fn.drag_drop_selectable.settings[list_id] && typeof($.fn.drag_drop_selectable.settings[list_id].onListChange) == 'function'){
                        setTimeout(function(){ $.fn.drag_drop_selectable.settings[list_id].onListChange( $('ul[dds='+list_id+']') ); },50);
                    }
                    
                    
                },
                accept:function(d){
                    if( $.fn.drag_drop_selectable.getListId( d.attr('dds') ) == $(this).attr('dds')){
                        return false;
                    }
                    return true;
                },
                hoverClass:$.fn.drag_drop_selectable.settings[list_id].hoverClass,
                tolerance:'pointer'
            });
        });  
    };
    $.fn.drag_drop_selectable.moveBetweenLists=function(item_id, old_list_id, new_list_id){
        //first deselect.
        $.fn.drag_drop_selectable.deselect(parseInt(item_id));
        //now remove from stack
        $.fn.drag_drop_selectable.stack[old_list_id].all.splice( $.inArray( parseInt(item_id),$.fn.drag_drop_selectable.stack[old_list_id].all ),1);
        //now add to new stack.
        $.fn.drag_drop_selectable.stack[new_list_id].all.push( parseInt(item_id) );
        //now move DOM Object.
        $('ul[dds='+old_list_id+']').find('li[dds='+item_id+']').removeClass($.fn.drag_drop_selectable.settings[old_list_id].ghostClass).appendTo( $('ul[dds='+new_list_id+']') );
    };
    $.fn.drag_drop_selectable.getSelectedForDragging=function(item_id){
        var list = $.fn.drag_drop_selectable.getListId( item_id );
        var $others = $.fn.drag_drop_selectable.getListItems( list ).clone().each(function(){
            $(this).not('.dds_selected').css({visibility:'hidden'});
            $(this).filter('.dds_selected').addClass( $.fn.drag_drop_selectable.settings[list].moveClass ).css({opacity:$.fn.drag_drop_selectable.settings[list].moveOpacity});;
            $(this).attr('dds_drag',$(this).attr('dds'))
            $(this).attr('dds','');
        });
        return $others;
    };
    $.fn.drag_drop_selectable.getMarginForDragging=function($item){
        //find this items offset and the first items offset.
        var this_offset = $item.position().top;
        var first_offset = $.fn.drag_drop_selectable.getListItems( $.fn.drag_drop_selectable.getListId( $item.attr('dds') ) ).eq(0).position().top;
        return this_offset-first_offset;
    }
    
    $.fn.drag_drop_selectable.toggle=function(id){
        if(!$.fn.drag_drop_selectable.isSelected(id)){
            $.fn.drag_drop_selectable.select(id);
        }else{
            $.fn.drag_drop_selectable.deselect(id);
        }
    };
    $.fn.drag_drop_selectable.select=function(id){
        if(!$.fn.drag_drop_selectable.isSelected(id)){
            var list = $.fn.drag_drop_selectable.getListId(id);
            $.fn.drag_drop_selectable.stack[list].selected.push(id);
            $('[dds='+id+']').trigger('dds.select');
        }
    };
    $.fn.drag_drop_selectable.deselect=function(id){
        if($.fn.drag_drop_selectable.isSelected(id)){
            var list = $.fn.drag_drop_selectable.getListId(id);
            $.fn.drag_drop_selectable.stack[list].selected.splice($.inArray(id,$.fn.drag_drop_selectable.stack[list].selected),1);
            $('[dds='+id+']').trigger('dds.deselect');
        }
    };
    $.fn.drag_drop_selectable.isSelected=function(id){
        return $('li[dds='+id+']').hasClass('dds_selected');
    };
    $.fn.drag_drop_selectable.replace=function(id){
        //find the list this is in!
        var list = $.fn.drag_drop_selectable.getListId(id);
        $.fn.drag_drop_selectable.selectNone(list);
        $.fn.drag_drop_selectable.stack[list].selected.push(id);
        $('[dds='+id+']').trigger('dds.select');
    };
    $.fn.drag_drop_selectable.selectNone=function(list_id){
        $.fn.drag_drop_selectable.getListItems(list_id).each(function(){
            $.fn.drag_drop_selectable.deselect( $(this).attr('dds') );
        });return false;
    };
    $.fn.drag_drop_selectable.selectAll=function(list_id){
        $.fn.drag_drop_selectable.getListItems(list_id).each(function(){
            $.fn.drag_drop_selectable.select( $(this).attr('dds') );
        });return false;
    };
    $.fn.drag_drop_selectable.selectInvert=function(list_id){
        $.fn.drag_drop_selectable.getListItems(list_id).each(function(){
            $.fn.drag_drop_selectable.toggle( $(this).attr('dds') );
        });return false;
    };
    $.fn.drag_drop_selectable.getListItems=function(list_id){
        return $('ul[dds='+list_id+'] li');
    };
    $.fn.drag_drop_selectable.getListId=function(item_id){
        return parseInt($('li[dds='+item_id+']').parent('ul').eq(0).attr('dds'));
    };
    $.fn.drag_drop_selectable.serializeArray=function( list_id ){
        var out = [];
        $.fn.drag_drop_selectable.getListItems(list_id).each(function(){
            out.push($(this).attr('id'));
        });
        return out;
    };
    $.fn.drag_drop_selectable.serialize=function( list_id ){
	
            return $.fn.drag_drop_selectable.serializeArray( list_id ).join(", ");
    };
    
    $.fn.drag_drop_selectable.unique=0;
    $.fn.drag_drop_selectable.stack=[];
    $.fn.drag_drop_selectable.defaults={
        moveOpacity: 0.8, //opacity of moving items
        ghostClass: 'dds_ghost', //class for "left-behind" item.
        hoverClass: 'dds_hover', //class for acceptable drop targets on hover
        moveClass:  'dds_move', //class to apply to items whilst moving them.
        selectedClass: 'dds_selected', //this default will be aplied any way, but the overridden one too.
        onListChange: function(list){ console.log( list.attr('id') );} //called once when the list changes
    }
    $.fn.drag_drop_selectable.settings=[];
    
    
    $.extend({
        dds:{
                selectAll:function(id){ return $.fn.drag_drop_selectable.selectAll($('#'+id).attr('dds')); },
                selectNone:function(id){ return $.fn.drag_drop_selectable.selectNone($('#'+id).attr('dds')); },
                selectInvert:function(id){ return $.fn.drag_drop_selectable.selectInvert($('#'+id).attr('dds')); },
                serialize:function(id){ return $.fn.drag_drop_selectable.serialize($('#'+id).attr('dds')); }
            }
    });
    
    var CTRL_KEY = 17;
    var ALT_KEY = 18;
    var SHIFT_KEY = 16;
    var META_KEY = 92;
    $.fn.captureKeys=function(){
        if($.fn.captureKeys.capturing){ return; }
        $(document).keydown(function(e){
            if(e.keyCode == CTRL_KEY ){ $.fn.captureKeys.stack.CTRL_KEY  = true  }
            if(e.keyCode == SHIFT_KEY){ $.fn.captureKeys.stack.SHIFT_KEY = true  }
            if(e.keyCode == ALT_KEY  ){ $.fn.captureKeys.stack.ALT_KEY   = true  }
            if(e.keyCode == META_KEY ){ $.fn.captureKeys.stack.META_KEY  = true  }
        }).keyup(function(e){
            if(e.keyCode == CTRL_KEY ){ $.fn.captureKeys.stack.CTRL_KEY  = false }
            if(e.keyCode == SHIFT_KEY){ $.fn.captureKeys.stack.SHIFT_KEY = false }
            if(e.keyCode == ALT_KEY  ){ $.fn.captureKeys.stack.ALT_KEY   = false }
            if(e.keyCode == META_KEY ){ $.fn.captureKeys.stack.META_KEY  = false }
        });
    };
    $.fn.captureKeys.stack={ CTRL_KEY:false, SHIFT_KEY:false, ALT_KEY:false, META_KEY:false }
    $.fn.captureKeys.capturing=false;
    $.fn.isPressed=function(key){
        switch(key){
            case  CTRL_KEY: return $.fn.captureKeys.stack.CTRL_KEY;
            case   ALT_KEY: return $.fn.captureKeys.stack.ALT_KEY;
            case SHIFT_KEY: return $.fn.captureKeys.stack.SHIFT_KEY;
            case  META_KEY: return $.fn.captureKeys.stack.META_KEY;
            default: return false;
        }
    }
})(jQuery);


$(function(){
    mychange = function ( $list ){
        $( '#'+$list.attr('id')+'_serialised').html( $.dds.serialize( $list.attr('id')) );
    }
    $('ul').drag_drop_selectable({
        onListChange:mychange
    });
    $( '#list_1_serialised').html( $.dds.serialize( 'list_1' ) );
    $( '#list_2_serialised').html( $.dds.serialize( 'list_2' ) );
});
</script>


</head>
<body>
<div id="contentLeft" class='panel'>
<h2>List 1</h2>
<p>Select: 
    <a href='#' onclick='return $.dds.selectAll("list_1");'>all</a> 
    <a href='#' onclick='return $.dds.selectNone("list_1");'>none</a> 
    <a href='#' onclick='return $.sdds.selectInvert("list_1");'>invert</a>

</p>
<?php 
include ("../include/actions.php");
include_once("../include/myconnect.php");
$sqlq = "SELECT * FROM category where has_childs='yes'";
$result = mysql_query($sqlq);
$c=0;
$HTML="<ul id=\"list_1\">";
while ($row = mysql_fetch_array($result))
{$c+=1;
	$id = $row['ID'];
	$name = $row['Title'];
	$HTML.="<li id=".$id.">" .$name. "</li>";
	
}
$HTML.="</ul>";
echo ($HTML);
?>


</div>
<div id="" class='panel'>
<h2>List 2</h2>
<p>Select: 
    <a href='#' onclick='return $.dds.selectAll("list_2");'>all</a> 
    <a href='#' onclick='return $.dds.selectNone("list_2");'>none</a> 
    <a href='#' onclick='return $.dds.selectInvert("list_2");'>invert</a>

</p>

<ul id="list_2">
    
</ul>
<p>This list contains: <span id='list_2_serialised'></span></p>
</div>
<p><span id='list_1_serialised'></span></p>



</body>
</html>

i want to update my database table from the data existing in list_2
any ideas?

You need to look into the jQuery.ajax function, this will send/receive information from a PHP document.

What you need to do is set up a PHP document that will handle the the form as though it were being posted to by http, or by setting the action on the <form> tag.

You then need to make a function similar to this:

var name = $("input[name=name]").val();
var email = $("input[name=email]").val();
jQuery.ajax({
type: "POST",
url: "document handle/ php document",
timeout: 4000,
beforeSend: function() {
$("#loadingScreen").html('<img src="link to loading image, optional" alt="" />');
},
data: "name="+name+"&email="+email,
error: function() {
alert("We are experiencing some issues at the moment. \r\n Please try again soon.");
},
success: function( success ) {
$("#results").html( success );
}
});

The beforeSend is optional, if you don't want a loading image or text then you can remove the three lines relating to the attribute.

The others are quite self explanitary, for data though you must have the first name of the value inside the $_POST[' but when adding a second you must have the + infornt of the name.

This is virtual submiting certain values without page refresh and mutch input from the user.

By the way you are going in the right direction with jQuery, it is a brilliant framework. I use it with majority of JavaScript work. Someone asked recently where a good place to learn jQuery was. Well themeforest (http://themeforest.net) have a beginners series on their blog. Try googling theme forest jquery video tutorials .

;)

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