//**************************************************************
// jQZoom allows you to realize a small magnifier window,close
// to the image or images on your web page easily.
//
// jqZoom version 1.2
// Author Doc. Ing. Renzi Marco(www.mind-projects.it)
// Released on Dec 05 2007
// i'm searching for a job,pick me up!!!
// mail: renzi.mrc@gmail.com
//**************************************************************

(function(jQuery){

	jQuery.fn.jqueryzoom = function(options){

		var settings = {
			xzoom: 200,		//zoomed width default width
			yzoom: 350,		//zoomed div default width
			offset: 10,		//zoomed div default offset
			position: "right"  //zoomed div default position,offset position is to the right of the image
		};

		if(options) {
			jQuery.extend(settings, options);
		}

		var noalt ='';

		jQuery(this).click(function(e){

			var imageLeft = jQuery('#bigimage').get(0).offsetLeft;
			var imageRight = jQuery('#bigimage').get(0).offsetRight;
			var imageTop =  jQuery('#bigimage').get(0).offsetTop;
			var imageWidth = jQuery('#bigimage').get(0).offsetWidth;
			var imageHeight = jQuery('#bigimage').get(0).offsetHeight;

			var bigimage = jQuery('#bigimage').attr("alt");
				noalt = jQuery('#bigimage').attr("alt");
				//jQuery(this).attr("alt",'');

			if( jQuery("img.bigimg").attr('src') != bigimage ){
				jQuery("img.bigimg").attr('src', bigimage );
			}

			if(jQuery("div.zoomdiv").get().length == 0){
				//jQuery(this).after("<div class='zoomdiv'><img class='bigimg' src='"+bigimage+"'/></div>");
			}

			if(settings.position == "right"){
				leftpos = imageLeft + imageWidth + settings.offset;
			} else {
				leftpos = imageLeft - settings.xzoom - settings.offset;
			}

			//jQuery("div.zoomdiv").css({ top: imageTop,left: leftpos });

			jQuery("div.zoomdiv").width(settings.xzoom);
			jQuery("div.zoomdiv").height(settings.yzoom);

			jQuery("div.zoomdiv").show();






			var bigwidth = jQuery(".bigimg").get(0).offsetWidth;
			var bigheight = jQuery(".bigimg").get(0).offsetHeight;
			var scaley ='x';
			var scalex= 'y';


			if(isNaN(scalex)|isNaN(scaley)){
				var scalex = Math.round(bigwidth/imageWidth) ;
				var scaley = Math.round(bigheight/imageHeight);
			}

			scrolly = e.pageY - imageTop - (jQuery("div.zoomdiv").height()*1/scaley)/2 ;
			jQuery("div.zoomdiv").get(0).scrollTop = scrolly * scaley  ;
			scrollx =    e.pageX - imageLeft - (jQuery("div.zoomdiv").width()*1/scalex)/2 ;
			jQuery("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex ;








			//jqZoomMouseMove(e);
			jQuery(document.body).mousemove( function(e){

				var bigwidth = jQuery(".bigimg").get(0).offsetWidth;
				var bigheight = jQuery(".bigimg").get(0).offsetHeight;
				var scaley ='x';
				var scalex= 'y';


				if(isNaN(scalex)|isNaN(scaley)){
					var scalex = Math.round(bigwidth/imageWidth) ;
					var scaley = Math.round(bigheight/imageHeight);
				}

				mouse = new MouseEvent(e);

				scrolly = mouse.y - imageTop - (jQuery("div.zoomdiv").height()*1/scaley)/2 ;
				jQuery("div.zoomdiv").get(0).scrollTop = scrolly * scaley  ;
				scrollx =    mouse.x - imageLeft - (jQuery("div.zoomdiv").width()*1/scalex)/2 ;
				jQuery("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex ;

			} );

		},function(){
			//   jQuery(this).attr("alt",noalt);
		   jQuery("div.zoomdiv").hide();
		   jQuery(document.body).unbind("mousemove");
		   /*jQuery(".lenszoom").remove();
		   jQuery("div.zoomdiv").remove();*/
		});

	}

})(jQuery);

function MouseEvent( e ){
	this.x = e.pageX;
	this.y = e.pageY;
}