(function($,undefined){$.extend({"lockfixed":function(el,config){if(config&&config.offset){config.offset.bottom=parseInt(config.offset.bottom,10);config.offset.top=parseInt(config.offset.top,10);}else{if(!config){config={};}config.offset={bottom:100,top:0};}if(el&&el.offset()){var el_position=el.css("position"),el_margin_top=parseInt(el.css("marginTop"),10)||0,el_position_top=el.css("top"),el_top=el.offset().top,pos_not_fixed=false;if(config.forcemargin===true||navigator.userAgent.match(/\bMSIE (4|5|6)\./)||navigator.userAgent.match(/\bOS ([0-9])_/)||navigator.userAgent.match(/\bAndroid ([0-9])\./i)){pos_not_fixed=true;}el.wrap("<div style='height:"+el.outerHeight()+"px;display:"+el.css("display")+"'></div>");$(window).bind('DOMContentLoaded load scroll resize orientationchange lockfixed:pageupdate',el,function(e){if(pos_not_fixed&&document.activeElement&&document.activeElement.nodeName==="INPUT"){return;}var top=0,el_height=el.outerHeight(),el_width=el.outerWidth(),max_height=$(document).height()-config.offset.bottom,scroll_top=$(window).scrollTop();if(el.css("position")!=="fixed"&&!pos_not_fixed){el_top=el.offset().top;el_position_top=el.css("top");}if(scroll_top>=(el_top-(el_margin_top?el_margin_top:0)-config.offset.top)){if(max_height<(scroll_top+el_height+el_margin_top+config.offset.top)||el_height+config.offset.top>$(window).height()){top=(scroll_top+el_height+el_margin_top+config.offset.top)-max_height;}else{top=0;}if(pos_not_fixed){el.css({'marginTop':(parseInt(scroll_top-el_top-top,10)+(2*config.offset.top))+'px'});}else{el.css({'position':'fixed','top':(config.offset.top-top)+'px','width':el_width+"px"});}}else{el.css({'position':el_position,'top':el_position_top,'width':el_width+"px",'marginTop':(el_margin_top&&!pos_not_fixed?el_margin_top:0)+"px"});}});}}});})(jQuery);