function esIE(){
    nNav=navigator.appName;
    if (nNav=='Microsoft Internet Explorer') return true;
    else return false;
}

function esArchImagen(oSrc, args){
  args.IsValid=false;
  Ext=getExt(args.Value);
  if (Ext=="JPG"||Ext=="GIF"||Ext=="PNG") args.IsValid=true;
  return args.IsValid;
}

function esArchDeProyecto(oSrc, args){
  args.IsValid=false;
  Ext=getExt(args.Value);
  if (Ext=="ZIP"||Ext=="PDF"||Ext=="DOC") args.IsValid=true;
  return args.IsValid;
}

function esIE(){
    nNav=navigator.appName;
    if (nNav=='Microsoft Internet Explorer') return true;
    else return false;
}

 function validarDirWeb(oSrc, args){
  args.IsValid=true;
  if (args.Value.length>4)
    if (args.Value.toLowerCase().substring(0,3)=="www") args.IsValid=false;
  return args.IsValid;  
}

function getExt(Arch){
  arrArch=Arch.split(".");
  Ext=arrArch[arrArch.length - 1];
  return Ext=Ext.toUpperCase();
}

function CargarFlash(Arch, Width, Height, Transparent){
    var Trans='';
    if (Transparent) Trans="<param name='wmode' value='transparent' />";
    var Flash="<object type='application/x-shockwave-flash' data='"+Arch+"' width='"+Width+"' height='"+Height+"'>"
        + "<param name='movie' value='"+Arch+"' />"
        + Trans
        + "</object>";
    document.write(Flash);
}