function decode64(input) {
 var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
 	var output = "";
		var chr1, chr2, chr3;
		var enc1, enc2, enc3, enc4;
		var i = 0;
 
		input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
 
		while (i < input.length) {
 
			enc1 = keyStr.indexOf(input.charAt(i++));
			enc2 = keyStr.indexOf(input.charAt(i++));
			enc3 = keyStr.indexOf(input.charAt(i++));
			enc4 = keyStr.indexOf(input.charAt(i++));
 
			chr1 = (enc1 << 2) | (enc2 >> 4);
			chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
			chr3 = ((enc3 & 3) << 6) | enc4;
 
			output = output + String.fromCharCode(chr1);
 
			if (enc3 != 64) {
				output = output + String.fromCharCode(chr2);
			}
			if (enc4 != 64) {
				output = output + String.fromCharCode(chr3);
			}
 
		}
		return output;
   }
			
			$(function(){
			var imgs = $(".file").find("img");
				var downloads = $(".file").find(".downloadpic");
				if(window.sc8 != undefined)
				{
						downloads.css({"display":"block"});
						downloads.click(function(){
							var imgPath = $(this).next().attr("src");
							sc8.download(imgPath);
						});
				}
                   var maxWidth = ($(window).width() - 5);
                    maxWidth += "px";
	                    imgs.css({
	                        width: maxWidth,
	                        height: 'auto',
	                        display: "inline-block"
	                    });
	                    $("label[name='zoom']").toggle(function() {
	                        $("label[name='zoom']").empty().append("自动");
	                        imgs.css({
	                            width: 'auto'
	                        });
	                    },
	                    function() {
	                        $("label[name='zoom']").empty().append("放大");
	                        imgs.css({
	                            width: maxWidth
	                        });
	                    });
			b = $.url.param("b");
			if( b!="")
             {   b="p.php?myq="+b;
            $(".sbBack").attr("href",b);	
			}			
			});