(function($){$.fn.animate_from_to=function(targetElm,options){return this.each(function(){animate_from_to(this,targetElm,options);});};$.extend({animate_from_to:animate_from_to});function animate_from_to(sourceElm,targetElm,options){var source=$(sourceElm).eq(0),target=$(targetElm).eq(0);var defaults={pixels_per_second:1000,initial_css:{"background":"#dddddd","opacity":0.8,"position":"absolute","top":source.offset().top,"left":source.offset().left,"height":source.height(),"width":source.width(),"z-index":100000,"image":""},square:'',callback:function(){return;}}
if(options&&options.initial_css){options.initial_css=$.extend({},defaults.initial_css,options.initial_css);}options=$.extend({},defaults,options);var target_height=target.innerHeight(),target_width=target.innerWidth();if(options.square.toLowerCase()=='height'){target_width=target_height;}else if(options.square.toLowerCase()=='width'){target_height=target_width;}var shadowImage="";if(options.initial_css.image!=""){shadowImage="<img src='"+options.initial_css.image+"' style='width: 100%; height: 100%' />";}var dy=source.offset().top+source.width()/2-target.offset().top,dx=source.offset().left+source.height()/2-target.offset().left,pixel_distance=Math.floor(Math.sqrt(Math.pow(dx,2)+Math.pow(dy,2))),duration=(pixel_distance/options.pixels_per_second)*1000,shadow=$('<div>'+shadowImage+'</div>').css(options.initial_css).appendTo('body').animate({top:target.offset().top,left:target.offset().left,height:target_height,width:target_width},{duration:duration}).animate({opacity:0},{duration:100,complete:function(){shadow.remove();return options.callback();}});}})(jQuery);