var Precos = {
	iniciar: function() {

		addEvent('f-frete', 'submit', function(e) {
			var wFrete = window.open('', 'wFrete', 'width=400, height=200, top=200, left=' + parseInt((screen.width - 400) / 2))
			e.preventDefault()
			e.currentTarget.setAttribute('target', 'wFrete')
			e.currentTarget.submit()
			wFrete.focus()
		})
		
	}
}

addLoadEvent(Precos.iniciar)