演示1：default power: 2x. Range: 2x to 7x. Magnifier size: 100px by 100px

演示2：default power: 2x. Range: 1x to 5x. Magnifier size: 75px by 75px):

 
	jQuery(document).ready(function($){ //fire on DOM ready
		$('img#gallerya').addpowerzoom({magnifiersize:[200,200]}) //放大区域大小
		$('img.gallery').addpowerzoom({powerrange:[2,5]})
	})