this.image_preview = function() {
   var yOffset = 10;
   var xOffset = 30;
   var nPercent = 80;
   var width = 0;
   var height = 0;
   
   $(".image_preview").hover(function(e) {
      if ($("#image_preview").length > 0)
         $("#image_preview").remove();
   
      var maxwidth = $(this).attr('maxwidth');
      var maxheight = $(this).attr('maxheight');
      
      var url = $(this).attr('ref');
      var image = new Image();

      $(this).attr('title', '');
      
      $(image).bind("load", function () {
      
         width = $(this).attr('width');
         height = $(this).attr('height');
         
         if (parseInt(maxwidth) > 0 || parseInt(maxheight) > 0)
         {
            if (width > maxwidth)
            {
               height /= (width / maxwidth);
               width = maxwidth;
            }
            
            if (height > maxheight)
            {
               width /= (height / maxheight);
               height = maxheight;
            }
         }
         else
         {
            width *= (nPercent / 100);
            height *= (nPercent / 100);
         }
         
         var xoff = Math.max(0, e.pageX + xOffset);
         var yoff = e.pageY - yOffset;
         
         $("body").append("<div id='image_preview'><img src='"+ $(this).attr('src') +"' width='400px' height='400px' alt='' /></div>");
         $("#image_preview")
         .css("top",(yoff) + "px")
         .css("left",(xoff) + "px");
         
         $("#image_preview").fadeIn("slow");
      });
      
      image.src = url;
   },
   function() {
      $("#image_preview").remove();
   });
   
   $(".image_preview").mousemove(function(e) {      
      var xoff = Math.max(0, e.pageX + xOffset);
      var yoff = e.pageY - yOffset;
   
      $("#image_preview")
      .css("top",(yoff) + "px")
      .css("left",(xoff) + "px");
   });			
};


(function(a){a.tools=a.tools||{version:"v1.2.6"},a.tools.tooltip={conf:{effect:"toggle",fadeOutSpeed:"fast",predelay:0,delay:30,opacity:1,tip:0,fadeIE:!1,position:["top","center"],offset:[0,0],relative:!1,cancelDefault:!0,events:{def:"mouseenter,mouseleave",input:"focus,blur",widget:"focus mouseenter,blur mouseleave",tooltip:"mouseenter,mouseleave"},layout:"<div/>",tipClass:"tooltip"},addEffect:function(a,c,d){b[a]=[c,d]}};var b={toggle:[function(a){var b=this.getConf(),c=this.getTip(),d=b.opacity;d<1&&c.css({opacity:d}),c.show(),a.call()},function(a){this.getTip().hide(),a.call()}],fade:[function(b){var c=this.getConf();!a.browser.msie||c.fadeIE?this.getTip().fadeTo(c.fadeInSpeed,c.opacity,b):(this.getTip().show(),b())},function(b){var c=this.getConf();!a.browser.msie||c.fadeIE?this.getTip().fadeOut(c.fadeOutSpeed,b):(this.getTip().hide(),b())}]};function c(b,c,d){var e=d.relative?b.position().top:b.offset().top,f=d.relative?b.position().left:b.offset().left,g=d.position[0];e-=c.outerHeight()-d.offset[0],f+=b.outerWidth()+d.offset[1],/iPad/i.test(navigator.userAgent)&&(e-=a(window).scrollTop());var h=c.outerHeight()+b.outerHeight();g=="center"&&(e+=h/2),g=="bottom"&&(e+=h),g=d.position[1];var i=c.outerWidth()+b.outerWidth();g=="center"&&(f-=i/2),g=="left"&&(f-=i);return{top:e,left:f}}function d(d,e){var f=this,g=d.add(f),h,i=0,j=0,k=d.attr("title"),l=d.attr("data-tooltip"),m=b[e.effect],n,o=d.is(":input"),p=o&&d.is(":checkbox, :radio, select, :button, :submit"),q=d.attr("type"),r=e.events[q]||e.events[o?p?"widget":"input":"def"];if(!m)throw"Nonexistent effect \""+e.effect+"\"";r=r.split(/,\s*/);if(r.length!=2)throw"Tooltip: bad events configuration for "+q;d.bind(r[0],function(a){clearTimeout(i),e.predelay?j=setTimeout(function(){f.show(a)},e.predelay):f.show(a)}).bind(r[1],function(a){clearTimeout(j),e.delay?i=setTimeout(function(){f.hide(a)},e.delay):f.hide(a)}),k&&e.cancelDefault&&(d.removeAttr("title"),d.data("title",k)),a.extend(f,{show:function(b){if(!h){l?h=a(l):e.tip?h=a(e.tip).eq(0):k?h=a(e.layout).addClass(e.tipClass).appendTo(document.body).hide().append(k):(h=d.next(),h.length||(h=d.parent().next()));if(!h.length)throw"Cannot find tooltip for "+d}if(f.isShown())return f;h.stop(!0,!0);var o=c(d,h,e);e.tip&&h.html(d.data("title")),b=a.Event(),b.type="onBeforeShow",g.trigger(b,[o]);if(b.isDefaultPrevented())return f;o=c(d,h,e),h.css({position:"absolute",top:o.top,left:o.left}),n=!0,m[0].call(f,function(){b.type="onShow",n="full",g.trigger(b)});var p=e.events.tooltip.split(/,\s*/);h.data("__set")||(h.unbind(p[0]).bind(p[0],function(){clearTimeout(i),clearTimeout(j)}),p[1]&&!d.is("input:not(:checkbox, :radio), textarea")&&h.unbind(p[1]).bind(p[1],function(a){a.relatedTarget!=d[0]&&d.trigger(r[1].split(" ")[0])}),e.tip||h.data("__set",!0));return f},hide:function(c){if(!h||!f.isShown())return f;c=a.Event(),c.type="onBeforeHide",g.trigger(c);if(!c.isDefaultPrevented()){n=!1,b[e.effect][1].call(f,function(){c.type="onHide",g.trigger(c)});return f}},isShown:function(a){return a?n=="full":n},getConf:function(){return e},getTip:function(){return h},getTrigger:function(){return d}}),a.each("onHide,onBeforeShow,onShow,onBeforeHide".split(","),function(b,c){a.isFunction(e[c])&&a(f).bind(c,e[c]),f[c]=function(b){b&&a(f).bind(c,b);return f}})}a.fn.tooltip=function(b){var c=this.data("tooltip");if(c)return c;b=a.extend(!0,{},a.tools.tooltip.conf,b),typeof b.position=="string"&&(b.position=b.position.split(/,?\s/)),this.each(function(){c=new d(a(this),b),a(this).data("tooltip",c)});return b.api?c:this}})(jQuery);
(function(a){var b=a.tools.tooltip;a.extend(b.conf,{direction:"up",bounce:!1,slideOffset:10,slideInSpeed:200,slideOutSpeed:200,slideFade:!a.browser.msie});var c={up:["-","top"],down:["+","top"],left:["-","left"],right:["+","left"]};b.addEffect("slide",function(a){var b=this.getConf(),d=this.getTip(),e=b.slideFade?{opacity:b.opacity}:{},f=c[b.direction]||c.up;e[f[1]]=f[0]+"="+b.slideOffset,b.slideFade&&d.css({opacity:0}),d.show().animate(e,b.slideInSpeed,a)},function(b){var d=this.getConf(),e=d.slideOffset,f=d.slideFade?{opacity:0}:{},g=c[d.direction]||c.up,h=""+g[0];d.bounce&&(h=h=="+"?"-":"+"),f[g[1]]=h+"="+e,this.getTip().animate(f,d.slideOutSpeed,function(){a(this).hide(),b.call()})})})(jQuery);