var j = jQuery.noConflict();

function getFileExtension(filename)
{
  var ext = /(^.+)\.([^.]+)$/.exec(filename);
  return ext;
}


	var prepare_slider = function(){

		var x_pos = 0;
		var li_items_n = 0;
		var right_clicks = 0;
		var viewWindow = 4;
		var left_clicks = 0;

		var li_col = j("#slider_list li");

		li_col.each(function(index){
			//size = li.getSize();
			x_pos += j(this).width();

			li_items_n++;

			j(this, "img").css('cursor','pointer');



		})


		right_clicks = li_items_n - viewWindow;
		total_clicks = li_items_n - viewWindow;

		j('#slider_list').css('position','relative');
		j('#slider_list').css('left','0px');
		j('#slider_list').css('width', x_pos+'px');






		var is_playing = false;

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

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


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




if (!is_playing)									 {

			if (left_clicks > 0) {is_playing = true; j('#slider_list').animate({'left': cur_offset + 70 + 'px'}, 700, "linear", completed); right_clicks++; left_clicks--;} else {is_playing = true; j('#slider_list').animate({'left':    - 70 * total_clicks	+ 'px'}, 700, "linear", completed); right_clicks = 0; left_clicks = total_clicks;}
}
		});

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

			if (!is_playing)									 {

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

			 if (right_clicks > 0) {is_playing = true; j('#slider_list').animate({'left': cur_offset - 70 + 'px'},700, "linear", completed ); right_clicks--; left_clicks++; } else { is_playing = true; j('#slider_list').animate({'left':    0	+ 'px'},700, "linear", completed ); left_clicks = 0; right_clicks = total_clicks;}

												  }
			 });

	}