function nwindow(mypage,myname,w,h,scroll,pos)
{
	if (pos=="random")
	{
		LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;
		TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;
	}
	else if (pos=="center")
	{
		LeftPosition=(screen.width)?(screen.width-w)/2:100;
		TopPosition=(screen.height)?(screen.height-h)/2:100;
	}
	else
	{
		LeftPosition=0;
		TopPosition=20;
	}
	
	settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
	win=window.open(mypage,myname,settings);
	
	if(win.focus)
	{
		win.focus();
	}
}

function redimensionar (imagen)
{
  var ancho = imagen.width;
  var alto = imagen.height;
	
  if (Number(ancho) < 200)
  {
	ancho="200";
  }
  if (Number(alto) < 200)
  {
	alto="200";
  }
  
  if (navigator.appName == "Netscape")
  {
	alto = String(Number(alto));
  }
  else
  {
	ancho = String(Number(ancho));
	alto = String(Number(alto));
  }
  
  window.moveTo(((screen.availWidth - ancho)/2),((screen.availHeight - alto)/2));
  window.resizeTo(ancho, alto);
}

function imprimir ()
{
  	window.open('imprimir.php');
}

function isInteger1(val)
{
  for (var i=0; i < val.length; i++)
  {
	if (!isDigit1(val.charAt(i)))
	{
	  return (false);
	}
  }
  return (true);
} 

function isInteger2(val)
{
  for (var i=0; i < val.length; i++)
  {
	if (!isDigit2(val.charAt(i)))
	{
	  return (false);
	}
  }
  return (true);
} 

function isDigit1(num)
{
  var string="1234567890";
  if (string.indexOf(num) != -1)
  {
	return (true);
  }
  return (false);
}

function isDigit2(num)
{
  var string="1234567890,";
  if (string.indexOf(num) != -1)
  {
	return (true);
  }
  return (false);
}

function dosDeci(num)
{
	if (num!="")
	{
	  var array=num.split(",");
	  if(array.length>1)
	  {
		  var cad=array[1];
		  if (cad.length < 3)
		  {
			return (true);
		  }
		  return (false);
	  }
	}
}