/*
 * imgPreview jQuery plugin
 * Copyright (c) 2009 James Padolsey
 * j@qd9.co.uk | http://james.padolsey.com
 * Dual licensed under MIT and GPL.
 * Updated: 09/02/09
 * @author James Padolsey
 * @version 0.22
 */

(function(c){c.expr[':'].linkingToImage=function(a,g,e){return!!(c(a).attr(e[3])&&c(a).attr(e[3]).match(/\.(gif|jpe?g|png|bmp)$/i))};c.fn.imgPreview=function(j){var b=c.extend({imgCSS:{},distanceFromCursor:{top:10,left:10},preloadImages:true,onShow:function(){},onHide:function(){},onLoad:function(){},containerID:'imgPreviewContainer',containerLoadingClass:'loading',thumbPrefix:'',srcAttr:'href'},j),d=c('<div/>').attr('id',b.containerID).append('<img/>').hide().css('position','absolute').appendTo('body'),f=c('img',d).css(b.imgCSS),h=this.filter(':linkingToImage('+b.srcAttr+')');function i(a){return a.replace(/(\/?)([^\/]+)$/,'$1'+b.thumbPrefix+'$2')}if(b.preloadImages){(function(a){var g=new Image(),e=arguments.callee;g.src=i(c(h[a]).attr(b.srcAttr));g.onload=function(){h[a+1]&&e(a+1)}})(0)}h.mousemove(function(a)
{
	/* added by agriya to fix preview image top & left position*/
	var link = this;
	offset=20;
	pageX=a.pageX;
    pageY=a.pageY;
    var currentWindow=jQuery(window);
    winHeight = currentWindow.height();
	winWidth = currentWindow.width();
	topOffset = currentWindow.scrollTop();
	height = parseInt($Jq(link).attr('srcheight')) + offset;
	width = parseInt($Jq(link).attr('srcwidth')) + offset;
    previewOffsetTop=(winHeight-height)/2;
    previewOffsetLeft=(winWidth-width)/2;
    correctedTopOffset=previewOffsetTop+topOffset;

    centered=false;
    if (winHeight > height) {
        if (pageY<correctedTopOffset-offset) {pageY=pageY+offset;}
        else if (pageY>correctedTopOffset+height+offset) {pageY=pageY-offset-height;}
        else {pageY=correctedTopOffset;centered=true;}
    }
    else {
        pageY=topOffset;
        centered=true;
    }
    if (centered) {
        if (pageX<winWidth/2) {pageX+=offset;}
        else {pageX=pageX-width-offset;}
    }
    else {
        if (pageX<previewOffsetLeft-offset) {pageX=pageX+offset;}
        else if (pageX>previewOffsetLeft+width+offset) {pageX=pageX-width-offset;}
        else {pageX=previewOffsetLeft;}
    }
    d.css({top:pageY+'px',left:pageX+'px'})
	/* commented by agriya
	d.css({top:a.pageY+b.distanceFromCursor.top+'px',left:a.pageX+b.distanceFromCursor.left+'px'})
	*/
}).hover(function(){var a=this;d.addClass(b.containerLoadingClass).show();f.load(function(){d.removeClass(b.containerLoadingClass);f.show();b.onLoad.call(f[0],a)}).attr('src',i(c(a).attr(b.srcAttr)));b.onShow.call(d[0],a)},function(){d.hide();f.unbind('load').attr('src','').hide();b.onHide.call(d[0],this)});return this}})(jQuery);