var ddpowerzoomer={dsetting:{defaultpower:2,powerrange:[2,7],magnifiersize:[75,75]},mousewheelevt:(/Firefox/i.test(navigator.userAgent))?"DOMMouseScroll":"mousewheel",$magnifier:{outer:null,inner:null,image:null},activeimage:null,movemagnifier:function(e,moveBol,zoomdir){var activeimage=ddpowerzoomer.activeimage;var activeimginfo=activeimage.info;var coords=activeimginfo.coords;var $magnifier=ddpowerzoomer.$magnifier;var magdimensions=activeimginfo.magdimensions;var power=activeimginfo.power.current;var powerrange=activeimginfo.power.range;var x=e.pageX-coords.left;var y=e.pageY-coords.top;if(moveBol==true){if(e.pageX>=coords.left&&e.pageX<=coords.right&&e.pageY>=coords.top&&e.pageY<=coords.bottom)
$magnifier.outer.css({left:e.pageX-magdimensions[0]/2,top:e.pageY-magdimensions[1]/2});else{ddpowerzoomer.activeimage=null;$magnifier.outer.hide();}}
else if(zoomdir){var od=activeimginfo.dimensions;var newpower=(zoomdir=="in")?Math.min(power+1,powerrange[1]):Math.max(power-1,powerrange[0]);var nd=[od[0]*newpower,od[1]*newpower];$magnifier.image.css({width:nd[0],height:nd[1]});activeimginfo.power.current=newpower;}
power=activeimginfo.power.current;var newx=-x*power+magdimensions[0]/2;var newy=-y*power+magdimensions[1]/2;$magnifier.inner.css({left:newx,top:newy});},setupimage:function($,imgref,imgrefparent,options){var s=jQuery.extend({},ddpowerzoomer.dsetting,options);var $imgref=$(imgref);var $imgrefparent=$(imgrefparent);imgref.info={power:{current:s.defaultpower,range:s.powerrange},magdimensions:s.magnifiersize,dimensions:[$imgref.width(),$imgref.height()],coords:null}
$imgref.unbind('mouseenter').mouseenter(function(e){var $magnifier=ddpowerzoomer.$magnifier;$magnifier.outer.css({width:s.magnifiersize[0],height:s.magnifiersize[1]});var offset=$imgref.offset();var power=imgref.info.power.current;$magnifier.inner.html('<img src="'+$(imgrefparent).attr('href')+'"/>');$magnifier.inner.bind('click',function(e){$(imgrefparent).click();});$magnifier.image=$magnifier.outer.find('img:first').css({width:imgref.info.dimensions[0]*power,height:imgref.info.dimensions[1]*power});var coords={left:offset.left,top:offset.top,right:offset.left+imgref.info.dimensions[0],bottom:offset.top+imgref.info.dimensions[1]};imgref.info.coords=coords;$magnifier.outer.show();ddpowerzoomer.activeimage=imgref;});},init:function($){var $magnifier=$('<div style="position:absolute;width:100px;height:100px;display:none;overflow:hidden;border:1px solid black;"></div>').append('<div style="position:relative;left:0;top:0;" />').appendTo(document.body);ddpowerzoomer.$magnifier={outer:$magnifier,inner:$magnifier.find('div:eq(0)'),image:null};$magnifier=ddpowerzoomer.$magnifier;$(document).unbind('mousemove.trackmagnifier').bind('mousemove.trackmagnifier',function(e){if(ddpowerzoomer.activeimage){ddpowerzoomer.movemagnifier(e,true);}});$magnifier.outer.bind(ddpowerzoomer.mousewheelevt,function(e){if(ddpowerzoomer.activeimage){var delta=e.detail?e.detail*(-120):e.wheelDelta;if(delta<=-120){ddpowerzoomer.movemagnifier(e,false,"out");}else{ddpowerzoomer.movemagnifier(e,false,"in");}
e.preventDefault();}});}}
jQuery.fn.addpowerzoom=function(options){var $=jQuery;return this.each(function(){if(this.tagName!="IMG"){return true;}
if(typeof options=="undefined"){options={};}
if(options.largeimage&&options.largeimage.length>0){options.preloadimg=new Image();options.preloadimg.src=options.largeimage;}
var $imgref=$(this);var $imgrefparent=$(this).parent();options.largeimagesrc=(options.preloadimg)?options.preloadimg.src:$imgref.attr('src');if(parseInt(this.style.width)>0&&parseInt(this.style.height)>0){ddpowerzoomer.setupimage($,this,imgrefparent,options);}else if(this.complete){ddpowerzoomer.setupimage($,this,$imgrefparent,options);}
else{$imgref.bind('load',function(){ddpowerzoomer.setupimage($,this,$imgrefparent,options);});}});}
jQuery(document).ready(function($){ddpowerzoomer.init($);});