jQuery.fn.prepare_slider = function(){	

		var x_pos = 0;

		var li_items_n = 0;	

		var right_clicks = 0;		

		var left_clicks = 0;					

		var li_col = jQuery("#slider_list > li");		

		var li_width = li_col.outerWidth(true);		

		var viewWindow = Math.round(jQuery('.box-top').width()/li_width);

		

		li_col.each(function(index){			

			x_pos += jQuery(this).outerWidth(true);

			li_items_n++;								

		})	

		

		right_clicks = li_items_n - viewWindow;

		total_clicks = li_items_n - viewWindow;		

		

		jQuery('#slider_list').css('position','relative');

		jQuery('#slider_list').css('left','0px');

		jQuery('#slider_list').css('width', x_pos+'px');

		

		var is_playing = false;

		var completed = function() { is_playing = false; }

		

		jQuery('#left_but').click( function(){									

			cur_offset = jQuery('#slider_list').position().left;

			if (!is_playing){						

				if (left_clicks > 0) {

						is_playing = true; jQuery('#slider_list').animate({'left': cur_offset + li_width + 'px'}, 700, "linear", completed); 

						right_clicks++; 

						left_clicks--;

					} 

					else {

						is_playing = true;

						jQuery('#slider_list').animate({'left':    -li_width*total_clicks	+ 'px'}, 700, "linear", completed); 

						right_clicks = 0;

						left_clicks = total_clicks;

					}

			}

		});		



		jQuery('#right_but').click( function(){

			if (!is_playing){			

				cur_offset = jQuery('#slider_list').position().left;			

			 	if (right_clicks > 0) {

						is_playing = true; 

						jQuery('#slider_list').animate({'left': cur_offset - li_width + 'px'},700, "linear", completed );

						right_clicks--; left_clicks++; 

				} 

				else { 

						is_playing = true; jQuery('#slider_list').animate({'left':    0	+ 'px'},700, "linear", completed ); 

						left_clicks = 0;

						right_clicks = total_clicks;

					}			 

			}

		});	

		

	}



jQuery.fn.over = function(){						

	jQuery(this).hover(

	   function () {

	 	 jQuery(this).addClass("over");

	   },

	   function () {

	 	 jQuery(this).removeClass("over");

	   }

	 );		

   }