// JavaScript Document
function copyright(){
	alert("PyG Laboratoria Dental.\r\n2009 © Todos los derechos reservados");
	return false;
}

function validateLogin(form){
	if(form.usuario.value== ""){
		alert("Debe llenar el campo USUARIO !!!");
		form.usuario.focus();
		return false;
	} else {
		correo = validateEmail(form.usuario.value);
		if(correo==false){
			form.usuario.focus();
			return correo;	
		}
	}
	if(form.clave.value == ""){
		alert("Debe llenar el campo CLAVE!!!");
		form.clave.focus();
		return false;
	}
	
	return true;
}

function validateSearch(form){
	if(form.buscando.value == ""){
		alert("Debe ingresar un contenido!!!");
		form.buscando.focus();
		return false;
	}
	if(form.buscando.value.length<=3){
		alert("Debe ingresar un contenido mayor a 3 letras!!!");
		form.buscando.focus();
		return false;
	}
	return true;
}

function validateEmail(correo){
	var m = unescape(correo);
	var i = 1;
	var mLength = m.length;
	while ((i < mLength) && (m.charAt(i) != "@")){
		i++
	}
	if ((i >= mLength) || (m.charAt(i) != "@")){
		alert("Correo invalido");
		return false;
	} else {
		i += 2;
	}
	while ((i < mLength) && (m.charAt(i) != ".")){
		i++
	}
	if ((i >= mLength - 1) || (m.charAt(i) != ".")){
		alert("Correo invalido");
		return false;
	}
	return true;
	
}

function linkPage(page){
	document.location.href=page;
}

function sendForm(form){
   form.submit();
}

function stripCharsInBag (s, bag){
	var i;
    var returnString = "";
	
    for (i = 0; i < s.length; i++){
		var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }

    return returnString;
}

function isInteger (n){
	
	var i;
    
    for (i = 0; i < n.length; i++){   
        var c = n.charAt(i);
        if( i != 0 ) {
            if (!isDigit(c)){
				alert("Numero de telefono invalido");
				return false;
			}
        } else { 
            if (!isDigit(c) && (c != "-") || (c == "+")){
				alert("Numero de telefono invalido");
				return false;
			}
        }
    }
}

function isDigit (d){
	return ((d >= "0") && (d <= "9"))
}

document.oncontextmenu = copyright;