function Inint_AJAX() {
   
   try { return new ActiveXObject("Msxml2.XMLHTTP");  } catch(e) {} //IE
   try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {} //IE
   try { return new XMLHttpRequest(); } catch(e) {} //Native Javascript
   alert("XMLHttpRequest not supported");
   return null;
};

function startcontent(obj, sec){
	
	setStatus (obj);
	
 	var xmlhttp=Inint_AJAX();
    xmlhttp.onreadystatechange = function () { 
          if (xmlhttp.readyState==4) {
               if (xmlhttp.status==200) {
                    document.getElementById(obj).innerHTML=xmlhttp.responseText;
               } 
          }
     };
     xmlhttp.open("GET", "security/login/includes/contentpag.php?sec="+sec);
     xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=iso-8859-1");
     xmlhttp.send(null); //send value
	
}

function verifydata(){
	
	document.getElementById('btenter').disabled=true;
	
	var us=document.getElementById('user').value;
	var ps=document.getElementById('password').value;
	
	if(us==""){
		alert("O campo \"Usuário\" precisa ser preenchido");
		document.getElementById('user').focus();
		document.getElementById('btenter').disabled=false;				
		return false;
	} else if(ps==""){
		alert("O campo \"Senha\" precisa ser preenchido");
		document.getElementById('password').focus();
		document.getElementById('btenter').disabled=false;		
		return false;		
	}
	
	var urldestino='index.php?ch=user_panel';
	if(document.getElementById('urlrec')){
		if(document.getElementById('urlrec').value!=""){
			urldestino=document.getElementById('urlrec').value;
		}
	}
	
	var params;
	params = "u="+us;
	params+= "&p="+ps;	
	
 	var xmlhttp=Inint_AJAX();
    xmlhttp.onreadystatechange = function () { 
          if (xmlhttp.readyState==4) {
               if (xmlhttp.status==200) {
                	var rert=xmlhttp.responseText;
                    
                    if(rert=="1"){
						window.location=urldestino;
					} else if(rert=="0") {					 
						alert("Usuário ou Senha inválida.\nVerifique a autenticidade dos dados e tente novamente");
						document.getElementById('user').select();
						document.getElementById('password').value="";
						document.getElementById('btenter').disabled=false;					
					} else {
						alert("Erro interno do sistema!\nNão foi possível dar continuação a sua solicitação");
					}
                    
               } 
          }
     };
     xmlhttp.open("POST", "security/login/includes/verreglogin.php", true);
     xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
     xmlhttp.send(params);
	
}