$(document).ready(function(){
		
			var sliderAnimated = false;
			var currentPageNumber = 1;
			//var maxPageNumber = $('ul.groups > li').size();
			var maxPageNumber = Math.ceil($('ul.groups > li').size() / 4);
			
			$('ul.groups').width($('ul.groups > li').size() * 208);
		
			$('#nextBtn').click(function(){
			if(! sliderAnimated) {
				sliderAnimated = true;
				
				if(currentPageNumber < maxPageNumber) {	
					var marLeft = parseInt($("ul.groups").css("margin-left").replace("px", ""));
					marLeft = marLeft - 824;
					//marLeft = marLeft - 206;
					$("ul.groups").animate({marginLeft:marLeft + "px"}, 1000);
					currentPageNumber++;
				} else {
					$("ul.groups").animate({marginLeft:0 + "px"}, 1000);
					currentPageNumber = 1;
				}
				
				setTimeout(function() {sliderAnimated = false;}, 1000);
			}
				return false;
			});
			
			$('#prevBtn').click(function(){
			if(! sliderAnimated) {
				
				sliderAnimated = true;
				
				if(currentPageNumber > 1) {	
					var marLeft = parseInt($("ul.groups").css("margin-left").replace("px", ""));
					//marLeft = marLeft + 206
					marLeft = marLeft + 824;
					$("ul.groups").animate({marginLeft:marLeft + "px"}, 1000);
					currentPageNumber--;
				} else {
					var marLeft = -((maxPageNumber - 1) * 824);
					$("ul.groups").animate({marginLeft:marLeft + "px"}, 1000);
					currentPageNumber = maxPageNumber;
				}
				
				setTimeout(function() {sliderAnimated = false;}, 1000);
			}
				return false;
			});
		});