/*
* jQuery verticalScroll
* Copyright (c) 2011 SaCaWeb www.sacaweb.com
* 
* 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. 
*/

/*
* Version: V1.0
* Release: 23-02-2011
* Based on jQuery 1.4.2
*/



(function ($) {
    $.fn.verticalScrollPlus = function (options) {
        var options1 = $.extend({}, { speed: 500, step: 60, upID: "#su_btn", downID: "#giu_btn", scrollerID:"#scroller" }, options );
         var options2 = $.extend({}, { speed: 500, step: 60, upID1: "#su_btn1", downID: "#giu_btn", scrollerID:"#scroller" }, options );
         var options3 = $.extend({}, { speed: 500, step: 60, upID2: "#su_btn2", downID: "#giu_btn", scrollerID:"#scroller" }, options );
         var options4 = $.extend({}, { speed: 500, step: 60, upID3: "#su_btn3", downID: "#giu_btn", scrollerID:"#scroller" }, options );
         var options5 = $.extend({}, { speed: 500, step: 60, upID4: "#su_btn4", downID: "#giu_btn", scrollerID:"#scroller" }, options );
         var options6 = $.extend({}, { speed: 500, step: 60, upID5: "#su_btn5", downID: "#giu_btn", scrollerID:"#scroller" }, options );

        return this.each(function () {
            obj = $(this);//il wrapper
            obj.css("overflow", "hidden");
            obj.css("position", "relative");
            /*obj.css("height", options1.height + "px");*/
            var wrapper_h = obj.outerHeight();

            $(options1.scrollerID).css("position", "absolute");

            $(options1.downID).click(function () {
                 var scroller_h = $(options1.scrollerID).outerHeight();
                 var scroller_top2 = parseInt($(options1.scrollerID).css("top"));
                 if((scroller_top2 - wrapper_h - options1.step) < - scroller_h ){
                     var offset2 = scroller_h - wrapper_h;
                     $(options1.scrollerID).stop().animate({top:"-" + offset2 + "px"}, options1.speed);
                     return;
                 }
                 $(options1.scrollerID).stop().animate({
                      top: "-=" + options1.step + "px"
                          }, options1.speed);
            });

            $(options1.upID).click(function () {
                 var scroller_top = parseInt($(options1.scrollerID).css("top"));
                 var offset = scroller_top + wrapper_h;
                 if(offset > 0){
                     $(options1.scrollerID).stop().animate({top:0}, options1.speed);
                     return;
                 }
                 $(options1.scrollerID).stop().animate({
                      top: "+=" + options1.step + "px"
                          }, options1.speed);

            });
			
            $(options2.upID1).click(function () {
                 var scroller_top = parseInt($(options2.scrollerID).css("top"));
                 var offset = 200;
                  if(offset > 0){
                     $(options2.scrollerID).stop().animate({top:0}, options2.speed);
                     return;
                 }
                 $(options2.scrollerID).stop().animate({
                      top: "+=" + options2.step + "px"
                          }, options2.speed);
 
            });

            $(options3.upID2).click(function () {
                 var scroller_top = parseInt($(options3.scrollerID).css("top"));
                 var offset = 200;
                  if(offset > 0){
                     $(options3.scrollerID).stop().animate({top:0}, options3.speed);
                     return;
                 }
                 $(options3.scrollerID).stop().animate({
                      top: "+=" + options3.step + "px"
                          }, options3.speed);
 
            });

            $(options4.upID3).click(function () {
                 var scroller_top = parseInt($(options4.scrollerID).css("top"));
                 var offset = 200;
                  if(offset > 0){
                     $(options4.scrollerID).stop().animate({top:0}, options4.speed);
                     return;
                 }
                 $(options4.scrollerID).stop().animate({
                      top: "+=" + options4.step + "px"
                          }, options4.speed);
 
            });
			
            $(options5.upID4).click(function () {
                 var scroller_top = parseInt($(options5.scrollerID).css("top"));
                 var offset = 200;
                  if(offset > 0){
                     $(options5.scrollerID).stop().animate({top:0}, options5.speed);
                     return;
                 }
                 $(options5.scrollerID).stop().animate({
                      top: "+=" + options5.step + "px"
                          }, options5.speed);
 
            });

			
            $(options6.upID5).click(function () {
                 var scroller_top = parseInt($(options6.scrollerID).css("top"));
                 var offset = 200;
                  if(offset > 0){
                     $(options6.scrollerID).stop().animate({top:0}, options6.speed);
                     return;
                 }
                 $(options6.scrollerID).stop().animate({
                      top: "+=" + options6.step + "px"
                          }, options6.speed);
 
            });
			

        });


 



    };

})(jQuery);