function obrirpopup(endereco)
{
	var bname = navigator.appName;
	if(bname == "Microsoft Internet Explorer")
	{
		var velocidadev = 15;
		var topo = (window.screen.availHeight - 530)/2;
		var esquerda = (window.screen.availWidth - 740)/2;
		var velocidadeh = 15;
		if (document.all) {
		var tamlar = 200;
		var tamjan = 400;
		var tamanho = window.open("","","left=" + esquerda + ",top=" + topo + ",width=1,height=1,scrollbars=yes,resizable=yes");
		for (sizeheight = 1; sizeheight < tamlar; sizeheight += velocidadev) {
		tamanho.resizeTo("1",sizeheight );}
		for (sizewidth = 1; sizewidth < tamjan; sizewidth += velocidadeh) {
		tamanho.resizeTo(sizewidth+6,sizeheight );}
		tamanho.location = endereco;}
		else
		{
			x=window.location = endereco;
			x.focus();
		}
	}
	else
	{
		x=window.open(endereco,"","width=400,height=200,scrollbars=yes,resizable=yes")
		x.focus();
	}
}