function textCounter(field, countfield, maxlimit) {
	if (field.value.length > maxlimit) // if too long...trim it!
		field.value = field.value.substring(0, maxlimit);
	else 
		countfield.value = maxlimit - field.value.length;
}
function hideLevel( _levelId) {
	var thisLevel = document.getElementById( _levelId );
	thisLevel.style.display = "none";
	}
function showLevel( _levelId) {
	var thisLevel = document.getElementById( _levelId );
	if ( thisLevel.style.display == "none") {
		hideAll();
		thisLevel.style.display = "block";
		}	
	else {
		hideLevel( _levelId);		
		}		
	}
function normalN1(obj) {
	obj.style.color="#000000";
	obj.style.background="#EAF0F7";
	obj.style.cursor="hand";	
}
function rolloverN1(obj) {
	obj.style.color="#ffffff";
	obj.style.background="#5B93D2";	
	obj.style.cursor="hand";
}
function normalN2(obj) {
	obj.style.color="#000000";
	obj.style.background="#F4F8FB";
	obj.style.cursor="hand";	
}
function rolloverN2(obj) {
	obj.style.color="#ffffff";
	obj.style.background="#5B93D2";	
	obj.style.cursor="hand";
}

function validate(emailad) {
var exclude=/[^@\-\.\w]|^[_@\.\-]|[\._\-]{2}|[@\.]{2}|(@)[^@]*\1/;
var check=/@[\w\-]+\./;
var checkend=/\.[a-zA-Z]{2,3}$/;
	if(((emailad.search(exclude) != -1)||(emailad.search(check)) == -1)||(emailad.search(checkend) == -1))
{
 return true
  }
 else  return false
}
function verifydigit(texto)
{
  largo = texto.length;
  for (i=0; i < largo ; i++ )
    {
   if ( texto.charAt(i) != "0" && 
        texto.charAt(i) != "1" && texto.charAt(i) != "2" && 
        texto.charAt(i) != "3" && texto.charAt(i) != "4" && 
        texto.charAt(i)!= "5" && texto.charAt(i) != "6" && 
        texto.charAt(i) != "7" && texto.charAt(i)!= "8" && 
        texto.charAt(i) != "9" && texto.charAt(i)!= "-")
        {
          return false;
        }
    }
    return true;
}
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
var submitcount=0;

function conta() {
   if (submitcount == 0)
      {
      submitcount++;
      return true;
      }
   else 
      {
      alert("Los datos del formulario se están procesando..");
      return false;
      }
   }
   
function send()
{
	forma = document.contact;
	
	if(forma.nombre.value == "")
	{
		alert("Enter name")	
		forma.nombre.focus()
	}
	else if(forma.university.value == "")
	{
		alert("Enter university or organization")	
		forma.university.focus()
	}
	else if(forma.fono.value == "")
	{
		alert("Enter telephone number ")	
		forma.fono.focus()
	}
	else if(forma.email.value == "")
	{
		alert("Enter email address")	
		forma.email.focus()
	}
	else if(forma.mensaje.value == "")
	{
		alert("Enter your comment")	
		forma.mensaje.focus()
	}
	else
	{
		forma.action = "send.php"
		forma.submit()	
	}
		
}
function clean()
{
	forma = document.contact;
	
	forma.reset()
}
function login()
{
	forma = document.form_log;
	if(forma.user.value =="")
	{
		alert("Enter user")
		forma.user.focus()
	}
	else if(forma.pass.value =="")
	{
		alert("Enter password")
		forma.pass.focus()
	}
	else
	{
		forma.action = "error_login.php";
		forma.submit()
	}	
}