// JavaScript Document

var max=400; 
var ancho=630; 


function progreso_tecla(obj) { 
	
 var progreso = document.getElementById("progreso");  
 if (obj.value.length < max) { 
	progreso.style.backgroundColor = "#FFFFFF";  
	progreso.style.backgroundImage = "url(imagens/forms/textarea.png)";  
	progreso.style.color = "#666666"; 
	var pos = ancho-parseInt((ancho*parseInt(obj.value.length))/400); 
	progreso.style.backgroundPosition = "-"+pos+"px 0px"; 
 } else { 
	obj.value = obj.value.substring(0, 400);
	progreso.style.backgroundColor = "#CC0000";  
	progreso.style.backgroundImage = "url()";  
	progreso.style.color = "#FFFFFF"; 
  }     
  progreso.innerHTML = "("+obj.value.length+" / "+max+")"; 
  
 }