function popUpload(url, largura, altura) {
	horiz = parseInt((screen.width-largura)/2);
	vert = parseInt((screen.height-altura)/2);
	window.open(url,'popUpload','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no,width='+largura+',height='+altura+',top='+vert+',left='+horiz+'')
}