//**************************************************************
// 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
					offsety: 0,		//zoomed div default offset y
					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

				};

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

		    var noalt='';

//			alert($(this));

		    $(this).hover(function(){

				var imageLeft = $(this).offset().left;                
				var imageTop = $(this).offset().top;

				   
				var imageWidth = $(this).children('img').get(0).offsetWidth;
				var imageHeight = $(this).children('img').get(0).offsetHeight;

				var kAlpha = 0 ;

				noalt= $(this).children("img").attr("alt");

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

				$(this).children("img").attr("alt",'');

				if($("div.zoomdiv").get().length == 0){

				$(this).after("<div id='ptecas' style='filter:alpha(opacity=0);opacity:0' class='zoomdiv'><img id='bigimg' class='bigimg' src='"+bigimage+"'/></div>");
				$(this).append("<div class='jqZoomPup'>&nbsp;</div>");

				window.timepup = setTimeout('ligaPup()',800);


		    }


		    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;
				}
		    }

		    $("div.zoomdiv").css({ top: imageTop + settings.offsety,left: leftpos });
		    $("div.zoomdiv").width(settings.xzoom);
		    $("div.zoomdiv").height(settings.yzoom);
            $("div.zoomdiv").show();

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

			$(document.body).mousemove(function(e){

				mouse = new MouseEvent(e);

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

				if(isNaN(scalex)|isNaN(scaley)){

					var scalex = (bigwidth/imageWidth);
					var scaley = (bigheight/imageHeight);

					$("div.jqZoomPup").width((settings.xzoom)/scalex );
					$("div.jqZoomPup").height((settings.yzoom)/scaley);

					if(settings.lens){
						$("div.jqZoomPup").css('visibility','visible');
					}
				}

				xpos = mouse.x - $("div.jqZoomPup").width()/2 - imageLeft;
				ypos = mouse.y - $("div.jqZoomPup").height()/2 - imageTop ;

				if(settings.lens){
					xpos = (mouse.x - $("div.jqZoomPup").width()/2 < imageLeft ) ? 0 : (mouse.x + $("div.jqZoomPup").width()/2 > imageWidth + imageLeft ) ?  (imageWidth -$("div.jqZoomPup").width() -2)  : xpos;
					ypos = (mouse.y - $("div.jqZoomPup").height()/2 < imageTop ) ? 0 : (mouse.y + $("div.jqZoomPup").height()/2  > imageHeight + imageTop ) ?  (imageHeight - $("div.jqZoomPup").height() -2 ) : ypos;
				}

				if(settings.lens){
					$("div.jqZoomPup").css({ top: ypos,left: xpos });
				}

				scrolly = ypos;
				$("div.zoomdiv").get(0).scrollTop = scrolly * scaley;

				scrollx = xpos;
				$("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex ;


				});
		    },function(){

				$(this).children("img").attr("alt",noalt);
				$(document.body).unbind("mousemove");
				
				try
				{
					clearTimeout(window.timepup);
				}
				catch (e)
				{
				}
				if(settings.lens){
					try
					{
						$("div.jqZoomPup").remove();
					}
					catch (e)
					{
					}
				}
				$("div.zoomdiv").remove();
				//invAlpha(0);
				

		    });

        	count = 0;

		if(settings.preload){

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

				var imagetopreload= $(this).children("img").attr("jqimg");
				var content = jQuery('div.jqPreload'+count+'').html();
				jQuery('div.jqPreload'+count+'').html(content+'<img src=\"'+imagetopreload+'\">');

			});
		}

	}

})(jQuery);

function fadeIn(id, time) {
	target = document.getElementById(id);
	alpha = 0;
	timer = (time*1000)/50;
	var i = setInterval(
			function() {
				if (alpha >= 100)
				{
					clearInterval(i);
					window.ligado = 1 ;
				}
				//window.ptecsAlpha = alpha ;
				setAlpha(target, alpha);
				//invAlpha(alpha);
				alpha += 1;
			}, timer);
}

function setAlpha(target, alpha) {
	try {
		target.style.filter = "alpha(opacity="+ alpha +")";
	}
	catch (e) {
	}
	try {
		target.style.opacity = alpha/100;
	}
	catch (e) {
	}
}

function invAlpha(alpha)
{
	if (document.all)   // IE5
	{
		if (alpha == 100)
		   document.getElementById('detalhes-dir').style.display = 'none' ;
		else
		   document.getElementById('detalhes-dir').style.display = '' ;
			
	}

}
function ligaPup()
{
	fadeIn("ptecas",0.05);
}

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