function valida_check(form,name){
	if (name == 1){
		var id = new Array('vendedor','nome','email','interesse');
	}
	else{
		var id = new Array('nome','email','interesse');
	}
	for (i=0; i <= id.length-1; i++){
		if (form.elements[id[i]].value == '')
				return action(form,[id[i]],'obrigatório');
		if ([id[i]] == 'email'){  
			valido = /^[a-zA-Z0-9][a-zA-Z0-9\._-]+@([a-zA-Z0-9\._-]+\.)[a-zA-Z-0-9]{2}/;
			if (!valido.exec(form.elements[id[i]].value))
				return action(form,[id[i]],'inválido');
		}

		////////////////////////////////////////////////
		var inp = document.getElementsByTagName('input');
		for (x=0; x<inp.length; x++)
			if (inp[x].id == 'vendedor')
				if (inp[x].checked){
					var radio = inp[x];
					break;
				}
		if (!radio){
			alert('Escolha um vendedor!');
			return false;
		}
		////////////////////////////////////////////////	
			
			
	}
}


function valida(form,name){
	var id = new Array('nome','email','interesse'); 
	for (i=0; i <= id.length-1; i++){
		if (form.elements[id[i]].value == '')  
				return action(form,[id[i]],'obrigatório');
		if ([id[i]] == 'email'){  
			valido = /^[a-zA-Z0-9][a-zA-Z0-9\._-]+@([a-zA-Z0-9\._-]+\.)[a-zA-Z-0-9]{2}/;
			if (!valido.exec(form.elements[id[i]].value))
				return action(form,[id[i]],'inválido');
		}
	}
}


function action(form,campo,atrib){
 	clean();
	var parent  = form.elements[campo].parentNode;
	var content = parent.innerHTML;
	var alerta  = '<span id="alert">Campo '+campo+' '+atrib+'!</span>';
	parent.innerHTML = content + alerta;
	setTimeout (function (){form.elements[campo].focus()}, 0); 
	return false;
}

function clean(){
	if (get = document.getElementsByTagName('span')){
		var i=0;
		while (i <= get.length-1){
			get[i].style.display = 'none';
			i++;
		}
	}
}