//**************************************************************
// jQZoom allows you to realize a small magnifier window,close
// to the image or images on your web page easily.
//
// jqZoom version 2.2
// Author Doc. Ing. Renzi Marco(www.mind-projects.it)
// First Release on Dec 05 2007
// i'm looking for a job,pick me up!!!
// mail: renzi.mrc@gmail.com
//**************************************************************

(function($){
		
		$.fn.jqueryzoom = function(options){
	
		var settings = {
				xzoom: 200,		//zoomed width default width
				yzoom: 200,		//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
				lens:1, //zooming lens over the image,by default is 1;
				preload: 1,
				replaceDomId: "",
				replaceDomIE6: ""

			};

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

		    var noalt='';
			

		    $(this).hover(function(){
               
			    var imageLeft = $(this).offset().left - $(".superContainer").offset().left;                
			    var imageTop = $(this).offset().top - $(".superContainer").offset().top;
				
			    var imageWidth = $(this).children('img').get(0).offsetWidth;
			    var imageHeight = $(this).children('img').get(0).offsetHeight;
	
	
	            noalt= $(this).children("img").attr("alt");
	
			    var bigimage = $(this).children("img").attr("jqimg");
				var replaceDomId= $(this).children("img").attr("jqObj");
				var replaceDomIE6= $(this).children("img").attr("jqObjIE6");
				if (replaceDomIE6 && jQuery.browser.msie == true && jQuery.browser.version.substr(0, 1) == "6") {
					settings.replaceDomIE6 = replaceDomIE6;
				}
				
				
				
				if(!bigimage) return;
	
	            $(this).children("img").attr("alt",'');
	
			    if($("div.zoomdiv").get().length == 0){
				
				
				if( replaceDomId && $("#"+replaceDomId))
				{
					$("#"+replaceDomId).after("<div class='zoomdiv'><img class='bigimg' src='"+bigimage+"'/></div>");
				}
				else
				{
					 $(this).after("<div class='zoomdiv'><img class='bigimg' src='"+bigimage+"'/></div>");
				}
			   
			    $(this).append("<div class='jqZoomPup'>&nbsp;</div>");

		    }


		    if(settings.position == "right"){

            	if(imageLeft + imageWidth + settings.offset + settings.xzoom > screen.width)
				{
            		leftpos = imageLeft  - settings.offset - settings.xzoom;

            	}else{

		    		leftpos = imageLeft + imageWidth + settings.offset;
            	}
		    }
			else
			{
		    	leftpos = imageLeft - settings.xzoom - settings.offset;
		    	if(leftpos < 0){

            	leftpos = imageLeft + imageWidth  + settings.offset;

		    	}

		    }
			
			if(replaceDomId)
			{
				 $("div.zoomdiv").width(settings.xzoom);
		   		 $("div.zoomdiv").height(settings.yzoom);
			}
			else
			{
				 $("div.zoomdiv").css({ top: imageTop,left: leftpos });
		   		 $("div.zoomdiv").width(settings.xzoom);
		   		 $("div.zoomdiv").height(settings.yzoom);
			}

            $("div.zoomdiv").show();
			if(replaceDomId) $("#"+replaceDomId).hide();

            if(!settings.lens) $(this).css('cursor','crosshair');

				  $(this).mousemove(function(e,o)
				  {
	                   mouse = new MouseEvent(e);
					 
					   var bigImg=$(".bigimg").get(0);
						
						if(bigImg)
						{
							var bigwidth = bigImg.offsetWidth;
					    	var bigheight = bigImg.offsetHeight;
						}
						
	
					    var scaley ='x';
					    var scalex= 'y';
						
						var jqZoom =$('div.jqZoomPup');
	
					    if(isNaN(scalex)|isNaN(scaley)){
	
						    var scalex = (bigwidth/imageWidth);
						    var scaley = (bigheight/imageHeight);
							
							var jqZoomPupWidth=(settings.xzoom)/scalex;
							var jqZoomPupHeight=(settings.yzoom)/scaley;
							
							if(jqZoomPupWidth>imageWidth) jqZoomPupWidth=imageWidth;
							if(jqZoomPupHeight>imageHeight) jqZoomPupHeight=imageHeight;
						
		
						    jqZoom.width(jqZoomPupWidth);
				    		jqZoom.height(jqZoomPupHeight);
		
		                    if(settings.lens){
		                    	jqZoom.css('visibility','visible');
							}
					     }
						 
						 
						var zoomWidth=jqZoom.width();
						var zoomHeight=jqZoom.height();
						
	                   	xpos = mouse.x - zoomWidth/2 - imageLeft;
	                   	ypos = mouse.y - zoomHeight/2 - imageTop ;
	
						var offset=$(this).offset();
						
						var xpos = e.pageX - offset.left - zoomWidth/2;
						var ypos = e.pageY - offset.top - zoomHeight/2;
						
						imageLeft=offset.left;
						imageTop=offset.top;
						
						if(settings.lens){
	                    	xpos = (mouse.x - zoomWidth/2 < imageLeft ) ? 0 : (mouse.x + zoomWidth/2 > imageWidth + imageLeft ) ?  (imageWidth - zoomWidth -2)  : xpos;
							ypos = (mouse.y - zoomHeight/2 < imageTop ) ? 0 : (mouse.y + zoomHeight/2  > imageHeight + imageTop ) ?  (imageHeight - zoomHeight -2 ) : ypos;
	                    }
						
						
	                    if(settings.lens){
	                    	jqZoom.css({ top: ypos,left: xpos });
	                    }
	
						
						var zoomDiv=$("div.zoomdiv").get(0);
						
						scrolly = ypos;
						zoomDiv.scrollTop = scrolly * scaley;
						scrollx = xpos;
						zoomDiv.scrollLeft = (scrollx) * scalex ;
						
						if(settings.replaceDomIE6 && $("#"+settings.replaceDomIE6))
						{
							$("#"+settings.replaceDomIE6).hide();
						}


				    });
		    },function(){

               $(this).children("img").attr("alt",noalt);
		      // $(document.body).unbind("mousemove");
			   $(this).unbind("mousemove");
			   
			   if(settings.lens){
		       $("div.jqZoomPup").remove();
		       }
		       $("div.zoomdiv").remove();
			   var replaceDomId= $(this).children("img").attr("jqObj");
			   if(replaceDomId) $("#"+replaceDomId).show();
			   
			   if(settings.replaceDomIE6 && $("#"+settings.replaceDomIE6))
				{
					$("#"+settings.replaceDomIE6).show();
				}
			   

		    });

        count = 0;

		if(settings.preload){

		$('body').append("<div style='display:none;' class='jqPreload"+count+"'></div>");

		$(this).each(function(){

        var imagetopreload= $(this).children("img").attr("jqimg");

        var content = jQuery('div.jqPreload'+count+'').html();
		
		if(typeof imagetopreload != "undefined")
		{
			 jQuery('div.jqPreload'+count+'').html(content+'<img src=\"'+imagetopreload+'\">');
		}
       

		});

		}

		}

})(jQuery);

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


}