/***********************************************
	opacidade gradual
***********************************************/

var baseopacity=40

function slowhigh(which2){
imgobj=which2
browserdetect=which2.filters? "ie" : typeof which2.style.MozOpacity=="string"? "mozilla" : ""
instantset(baseopacity)
highlighting=setInterval("gradualfade(imgobj)",50)
}

function slowlow(which2){
cleartimer()
instantset(baseopacity)
}

function instantset(degree){
if (browserdetect=="mozilla")
imgobj.style.MozOpacity=degree/100
else if (browserdetect=="ie")
imgobj.filters.alpha.opacity=degree
}

function cleartimer(){
if (window.highlighting) clearInterval(highlighting)
}

function gradualfade(cur2){
if (browserdetect=="mozilla" && cur2.style.MozOpacity<1)
cur2.style.MozOpacity=Math.min(parseFloat(cur2.style.MozOpacity)+0.1, 0.99)
else if (browserdetect=="ie" && cur2.filters.alpha.opacity<100)
cur2.filters.alpha.opacity+=10
else if (window.highlighting)
clearInterval(highlighting)
}

/***********************************************
	pop-up image
***********************************************/

var ie=document.all
var ns6=document.getElementById&&!document.all

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

function enlarge(which, e, position, imgwidth, imgheight) {
	if (ie||ns6) {
		crossobj=document.getElementById? document.getElementById("showimage") : document.all.showimage
	if (position=="center") {
		pgyoffset=ns6? parseInt(pageYOffset) : parseInt(ietruebody().scrollTop)
		horzpos=ns6? pageXOffset+window.innerWidth/2-imgwidth/2 : ietruebody().scrollLeft+ietruebody().clientWidth/2-imgwidth/2
		vertpos=ns6? pgyoffset+window.innerHeight/2-imgheight/2 : pgyoffset+ietruebody().clientHeight/2-imgheight/2
	if (window.opera && window.innerHeight) //compensate for Opera toolbar
		vertpos=pgyoffset+window.innerHeight/2-imgheight/2
		vertpos=Math.max(pgyoffset, vertpos)
	}
	else {
		var horzpos=ns6? pageXOffset+e.clientX : ietruebody().scrollLeft+event.clientX
		var vertpos=ns6? pageYOffset+e.clientY : ietruebody().scrollTop+event.clientY
	}
	crossobj.style.left=horzpos+"px"
	crossobj.style.top=vertpos+"px"
	
	crossobj.innerHTML='<div align="right" id="dragbar"><span id="closetext" onClick="closepreview()">X FECHAR</span> </div><img src="'+which+'">'
	crossobj.style.visibility="visible"
	return false
	}
	else //if NOT IE 4+ or NS 6+, simply display image in full browser window
		return true
}

function closepreview(){
	crossobj.style.visibility="hidden"
}

function drag_drop(e) {
	if (ie&&dragapproved) {
		crossobj.style.left=tempx+event.clientX-offsetx+"px"
		crossobj.style.top=tempy+event.clientY-offsety+"px"
	}
	else if (ns6&&dragapproved) {
		crossobj.style.left=tempx+e.clientX-offsetx+"px"
		crossobj.style.top=tempy+e.clientY-offsety+"px"
	}
	return false
}

function initializedrag(e){
	if (ie&&event.srcElement.id=="dragbar"||ns6&&e.target.id=="dragbar") {
		offsetx=ie? event.clientX : e.clientX
		offsety=ie? event.clientY : e.clientY
		
		tempx=parseInt(crossobj.style.left)
		tempy=parseInt(crossobj.style.top)
		
		dragapproved=true
		document.onmousemove=drag_drop
	}
}

document.onmousedown=initializedrag
document.onmouseup=new Function("dragapproved=false")