(function($){$.fn.extend({imghover:function(opt){return this.each(function(){opt=$.extend({prefix:'',suffix:'_o',src:'',btnOnly:true,fade:true,fadeSpeed:300},opt||{});var node=$(this);if(!node.is('img')&&!node.is(':image')){var sel='img,:image';if(opt.btnOnly)sel='a '+sel;node.find(sel).imghover(opt);return;}
var orgImg=node.attr('src');var hoverImg;if(opt.src){hoverImg=opt.src;}
else{hoverImg=orgImg;if(opt.prefix){var pos=hoverImg.lastIndexOf('/');if(pos>0){hoverImg=hoverImg.substr(0,pos-1)+opt.prefix+hoverImg.substr(pos-1);}
else{hoverImg=opt.prefix+hoverImg;}}
if(opt.suffix){var pos=hoverImg.lastIndexOf('.');if(pos>0){hoverImg=hoverImg.substr(0,pos)+opt.suffix+hoverImg.substr(pos);}
else{hoverImg=hoverImg+opt.suffix;}}}
if(opt.fade){var hover=node.clone(true);node.css({marginTop:-38})
hover.attr('src',hoverImg).insertBefore(node);node.hover(function(){node.stop().animate({opacity:0},opt.fadeSpeed);},function(){node.stop().animate({opacity:1},opt.fadeSpeed);});}
else{node.hover(function(){node.attr('src',hoverImg)},function(){node.attr('src',orgImg)});}});}});})(jQuery);