/*
Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
This notice must stay intact
*/

var offsetfrommouse=[10,10]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=2; //duration in seconds image should remain visible. 0 for always.

var defaultimageheight = 60;	// maximum image size.
var defaultimagewidth = 60;	// maximum image size.

var timer;

function gettrailobj(){
if (document.getElementById)
return document.getElementById("zoom_div").style
}

function gettrailobjnostyle(){
if (document.getElementById)
return document.getElementById("zoom_div")
}


function truebody(){
return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}


function Close(){	
	gettrailobj().display= "none";
	document.onmousemove=""
	gettrailobj().left="-500px"
	clearTimeout(timer);
}
function DeLoad()
{
	document.getElementById('Loader').style.display='none';
}
function Open(imagename,title,width,height){
	var i = imagename;
	var t = title;
	var w = width;
	var h = height;
    timer = setTimeout("show('"+i+"','"+t+"',"+w+","+h+");",200);
}
function show(imagename,title,width,height){
 
    var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth - offsetfrommouse[0];
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight);

	if( (navigator.userAgent.indexOf("Konqueror")==-1  || navigator.userAgent.indexOf("Firefox")!=-1 || (navigator.userAgent.indexOf("Opera")==-1 && navigator.appVersion.indexOf("MSIE")!=-1)) && (docwidth>650 && docheight>500)) {
		( width == 0 ) ? width = defaultimagewidth: '';
		( height == 0 ) ? height = defaultimageheight: '';
			
		width+=15;
		height+=11;
		defaultimageheight = height;
		defaultimagewidth = width;
	
		document.onmousemove=followmouse; 

		
		var newHTML = '<div class="ZoomBorder" style="width:' + (width+0) + 'px;height:' + (height) + 'px"><div id="DivLoad"><div id="Loader"><div align="center">Carregando Foto Ampliada...</div><div id="Loader_Background"><div id="Progresso"> </div></div></div></div>';
		
    	newHTML = newHTML + '<div class="Zoom_Load"><center><img onload="javascript:DeLoad();" src="' + imagename + '" border="0" vspace="5"></center></div>';
		newHTML = newHTML + '</div>'; 
		
		if(navigator.userAgent.indexOf("MSIE")!=-1 && navigator.userAgent.indexOf("Opera")==-1 ){
			newHTML = newHTML+'<iframe src="about:blank" scrolling="no" frameborder="0" width="'+width+'" height="'+height+'"></iframe>';
		}		

		gettrailobjnostyle().innerHTML = newHTML;
		gettrailobj().display="block";
	}
}

function followmouse(e){

	var xcoord=offsetfrommouse[0];
	var ycoord=offsetfrommouse[1];
	
	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15;
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight);

	if (typeof e != "undefined"){
		if (docwidth - e.pageX < defaultimagewidth + 2*offsetfrommouse[0]){
			xcoord = e.pageX - xcoord - defaultimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < defaultimageheight + 2*offsetfrommouse[1]){
			ycoord += e.pageY - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < defaultimagewidth + 2*offsetfrommouse[0]){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - defaultimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (defaultimageheight + 2*offsetfrommouse[1])){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}
	
	var sizeX = parseInt(xcoord);
	var sizeY = parseInt(ycoord);
	var docX = document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15;
	var docY = document.all? Math.min(truebody().scrollHeight, truebody().scrollHeight) : Math.min(window.innerHeight);
	
	if(sizeX+340 > docX)
	{
		var dif = docX - sizeX - 25;
		var xcoord = parseInt(sizeX - dif);
	}
	
	if((sizeY+270) > docY)
	{
		//alert((sizeY+270) +" > "+ (docY-sizeY));
		var dif = docY - sizeY - 25;
		//alert(sizeY +" + "+ 270 + " - ("+ docY + " - " + sizeY + ")");
		//var ycoord = parseInt(dif-270)+sizeY+20;
	}
	
	gettrailobj().left=xcoord+"px";
	gettrailobj().top=(ycoord-10)+"px";

}