function showImg(file,w,h) {
   document.getElementById("bigImg").src = "fotos/"+file;
	if (document.layers){
   	document.getElementById("dark").style.top = document.pageYOffset+"px";
		document.getElementById("big").style.left = (window.innerWidth/2-w/2)+"px";
		document.getElementById("big").style.top  = (window.pageYOffset + (window.innerHeight/2)-(h/2)-10)+"px";
	} else {
   	document.getElementById("dark").style.top = document.body.scrollTop+"px";
		document.getElementById("big").style.left = document.body.clientWidth/2-w/2+"px";
	}
	document.getElementById("wmplayer").style.visibility = "hidden";
   document.getElementById("dark").style.visibility = 'visible';
	document.getElementById("big").style.visibility = 'visible'
}

function hideImg() {
	document.getElementById("dark").style.visibility = 'hidden';
	document.getElementById("big").style.visibility = 'hidden';
	document.getElementById("bigImg").src = "img/empty.gif";
   document.getElementById("wmplayer").style.visibility = "visible";   
}

function scroll() {
	if (document.layers) {
		document.getElementById("dark").style.top = document.pageYOffset+"px";
		document.getElementById("big").style.left = window.innerWidth/2-w/2+"px";
		document.getElementById("big").style.top  = window.pageYOffset + window.innerHeight/2-h/2-10+"px";
	} else {
		document.getElementById("dark").style.top = document.body.scrollTop+"px";
		document.getElementById("big").style.left = document.body.clientWidth/2-w/2+"px";
		document.getElementById("big").style.top  = document.body.scrollTop + document.body.clientHeight/2-h/2-10+"px";
	}
}