jquery.anystretch.min.js

/*
 * jQuery Anystretch
 * Version 1.1
 * https://github.com/danmillar/jquery-anystretch
 *
 * Add a dynamically-resized background image to the body
 * of a page or any other block level element within it
 *
 * Copyright (c) 2012 Dan Millar (@danmillar / decode.uk.com)
 * Dual licensed under the MIT and GPL licenses.
 *
 * This is a fork of jQuery Backstretch (v1.2)
 * Copyright (c) 2011 Scott Robbin (srobbin.com)
*/
;(function(a){a.fn.anystretch=function(b,c,d){var e=this.selector.length?false:true;return this.each(function(f){function r(){if(b){var c;if(!e){h.css({position:j.elPosition,background:"none"})}if(i.length==0){i=a("<div />").attr("class","anystretch").css({left:0,top:0,position:e?"fixed":"absolute",overflow:"hidden",zIndex:e?-999999:-999998,margin:0,padding:0,height:"100%",width:"100%"})}else{i.find("img").addClass("deleteable")}c=a("<img />").css({position:"absolute",display:"none",margin:0,padding:0,border:"none",zIndex:-999999}).bind("load",function(b){var c=a(this),e,f;c.css({width:"auto",height:"auto"});e=this.width||a(b.target).width();f=this.height||a(b.target).height();l=e/f;s(function(){c.fadeIn(j.speed,function(){i.find(".deleteable").remove();if(typeof d=="function")d()})})}).appendTo(i);if(h.children(".anystretch").length==0){if(e){a("body").append(i)}else{h.append(i)}}i.data("settings",j);c.one("error",function(){a(this).attr("src",j.fallback)});c.attr("src",b);a(window).resize(s)}}function s(b){try{q={left:0,top:0};n=t();o=n/l;if(o>=u()){p=(o-u())/2;if(j.positionY=="center"||j.centeredY){a.extend(q,{top:"-"+p+"px"})}else if(j.positionY=="bottom"){a.extend(q,{top:"auto",bottom:"0px"})}}else{o=u();n=o*l;p=(n-t())/2;if(j.positionX=="center"||j.centeredX){a.extend(q,{left:"-"+p+"px"})}else if(j.positionX=="right"){a.extend(q,{left:"auto",right:"0px"})}}i.children("img:not(.deleteable)").width(n).height(o).filter("img").css(q)}catch(c){}if(typeof b=="function")b()}function t(){return e?h.width():h.innerWidth()}function u(){return e?h.height():h.innerHeight()}var g={positionX:"center",positionY:"center",speed:0,elPosition:"relative"},h=a(this),i=e?a(".anystretch"):h.children(".anystretch"),j=i.data("settings")||g,k=i.data("settings"),l,m,n,o,p,q;if(c&&typeof c=="object")a.extend(j,c);if(c&&typeof c=="function")d=c;a(document).ready(r);return this})};a.anystretch=function(b,c,d){var e="onorientationchange"in window?a(document):a(window);e.anystretch(b,c,d)}})(jQuery)