(function (win, doc) { 
    var isIE = !','.split(/,/).length, 
        isIE6 = isIE && !win.XMLHttpRequest, 
        isIE8 = !!win.XDomainRequest, 
        isIE9 = isIE && !!+'\v1',                                 // alt: !!-[1,] 
        isIE7 = isIE && !isIE6 && !isIE8 && !isIE9, 
        isFF = !!doc.getBoxObjectFor || 'mozInnerScreenX' in win, // gecko 
        isOP = !!win.opera && !!win.opera.toString().indexOf('Opera'), 
        isOP9 = /^function \(/.test([].sort), 
        isWK = !!win.devicePixelRatio,                            // web-kit 
        isSF = /a/.__proto__ == '//',                             // safari 
        isCR = /s/.test(/a/.toString),                            // chrome 
        isMaxScreen = screen.width>1024;
        var setnav = function(){
			
			if(isMaxScreen){
					document.write('<!-- silde nav -->\
					<div class="slide-nav" id="J_navigator" style="height:56px;">\
						<iframe src="/nav.html" frameborder="0" scrolling="no"></iframe>\
					</div>\
					<!-- /silde nav -->');
			}else{
					document.write('<!-- silde nav -->\
					<div class="slide-nav" id="J_navigator" style="height:43px;">\
						<iframe src="/nav-2.html" frameborder="0" scrolling="no"></iframe>\
					</div>\
					<!-- /silde nav -->');
			}
	
        }
		
		var setnavcurrent=function(){
			var nav = $('.nav');
			var rel = nav.attr('rel');
			if(rel){
				$('.nav .'+rel).parent().addClass('current');
			}
		}
		
        var init = function(){
        	
        	var navbar = $('#J_navigator');
        	
        	if(isIE6){
				var num = (isMaxScreen) ? 113 : 103;
        		navbar.css({'position':'absolute','bottom':'auto','left':'0','top':(parseInt($(window).height() + $(document).scrollTop() - num))}).slideDown("fast");
        		var fixpos = function(){
        			navbar.animate({'top':(parseInt($(window).height() + $(document).scrollTop() - num))},{queue:false,duration:220});
        		}
        		
        		$(window).bind('scroll',function(){
        			fixpos();
        		});
        		
        		$(window).bind('resize',function(){
        			fixpos();
        		});
				
				try{document.execCommand("BackgroundImageCache",false,true);}catch(e){}
				
				$('.nav li').hover(function(){
					$(this).addClass('current');
				},function(){
					$(this).removeClass('current');
				});	
				
        	}else{
        		navbar.css({'bottom':'0','left':'0','position':'fixed'});
        	}

			var bdbg = $('body').css('background-image'),bool=false;
				//bdbg!=null && bdbg!='' && bdbg!='none' && (bdbg = bdbg.replace(/"|\)/g,'').split('(')[1]) && $('body').css('background','#000') && (bool = true);
				if(bool){
				}	
        }
		
        setnav();
        init();
        setnavcurrent();
})(window, document);