function desabilitar(arrayCampos, desab){
	for(i = 0; i < arrayCampos.length ; i++){
		campo = document.forms[0][arrayCampos[i]]
		if(desab != true){
			campo.disabled = false
			campo.className = ""
		}else{
			campo.disabled = true
			campo.className = "d"
		}
	}
}

function isento(obj){
	desabilitar(["tipo","receita","taxa","iasp"], obj.checked)
	botao = document.forms[0]["botao"]
	if(obj.checked == true){
		botao.value = "Visualizar Recibo"
	}else{
		botao.value = "Gerar GRU"
	}
}

function goToURL(obj){
	if(obj.value == "Pesquisar"){
		document.location.href = "resultado.htm"
	}
    if(obj.value == "GRU"){
		document.location.href = "GRUs.htm"
	}	
    if(obj.value == "CND"){
		document.location.href = "CND.htm"
	}		
    if(obj.value == "SID"){
		document.location.href = "SID.htm"
	}		
    if(obj.value == "REC"){
		document.location.href = "REC.htm"
	}		
}