function ventana(imagename, ancho, alto){
ancho=ancho+20
alto=alto+30
if (ancho > 700) {ancho=600;};
if (alto > 550) {alto=500;};
window.open(imagename,"Imagen","menubar=no,scrollbars=yes,status=no,width="+ancho+",height="+alto+", top=0, left=0, screenX=0, screenY=0")
}

 function infoscroll(seed,looped)
  {
    var text1  = "MONTAJES ELECTRICOS RODRIGO - Lineas baja y media tensión, centros de transformación, Alumbrados públicos, Estaciones de bombeo, proyectos electricos, etc...";
    var msg    = text1;
    var putout = " ";
    var c      = 1;
    if (looped > 3) {
      
    }
    else if (seed > 100) {
         seed--;
         var cmd="infoscroll(" + seed + "," + looped + ")";
         timerTwo=window.setTimeout(cmd,100);
    }
    else if (seed <= 100 && seed > 0) {
      for (c=0 ; c < seed ; c++)
        putout += " ";
      putout += msg.substring(0, 100-seed);
      seed--;
      var cmd = "infoscroll(" + seed + "," + looped + ")";
      window.status = putout;
      timerTwo = window.setTimeout(cmd,100);
    }
    else if (seed <= 0) {
      if (-seed < msg.length) {
        putout+=msg.substring(-seed,msg.length);
        seed--;
        var cmd="infoscroll(" + seed + "," + looped + ")";
        window.status=putout;
        timerTwo=window.setTimeout(cmd,100); // 100
      }
      else {
        window.status=" ";
        looped += 1;
        var cmd = "infoscroll(100," + looped + ")";
        timerTwo=window.setTimeout(cmd,75); // 75
      }
    }
  }

  infoscroll(100,1);
  

<!--
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_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_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];}
}
//-->