function verSelect(op)
{
	var arrSel = document.getElementsByTagName("SELECT");
	
	for(i=0;i<arrSel.length;i++)
	{
		arrSel[i].style.display = op;
	}
	return;
}
function telaEdicao(cod)
{
	var tela = document.getElementById("TelaEdicao");
	var nomeImg = "img"+cod;
	
	var img = null;
	
	for(i=0;i<document.images.length;i++)
	{
		if(document.images[i].name == nomeImg)
		{
			var img = document.images[i];
			break;
		}
	}
	posiciona(tela,img);
	verSelect("none");
	tela.style.display = "block";
}
function escondeTela(nome)
{
	var tela = document.getElementById(nome);
	tela.style.display = "none";
	tela.style.left = "0px";
	tela.style.top  = "0px";
	limparFormulario(document.frm);
	verSelect("block");
}
function posiciona(dv,im)
{
	var posX = findPosX(im);
	var posY = findPosY(im);
	dv.style.left = (posX)+"px";
	dv.style.top	= (posY+17)+"px";
}

function findPosX(obj)
{
	var curleft = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curleft += obj.offsetLeft
			obj = obj.offsetParent;
		}
	}
	else if (obj.x)
		curleft += obj.x;
	return curleft;
}

function findPosY(obj)
{
	var curtop = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curtop += obj.offsetTop
			obj = obj.offsetParent;
		}
	}
	else if (obj.y)
		curtop += obj.y;
	return curtop;
}