function checkInput(obj,type) {

	var ok = false;

	switch(type)
	{
	case "password":
	  
	  if(obj.value.length > 4) {
			ok = true;
	  }
	  
	  break;
	case "email":
		var pattern =/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
		if (pattern.test(obj.value)) {
			ok = true;
		}
	  
	  break;
	default:
	  	if(obj.value.length > 0) {
			ok = true;
	  	}
	}
	
	if(ok) {
		obj.className = "inputtext";	
	} else {
		obj.className = "inputtext_nok";
	}

}