var wndExternal = null;

function openExternalWindow(url) {
  if(wndExternal == null || wndExternal.closed)  {
    wndExternal = window.open(url, "link", "toolbar=no,menubar=no,scrollbars=yes,resizable=no,location=no,height="+h+",width="+w);
  } else {
    window.blur();
    wndExternal.location.href=url;
    wndExternal.focus();
  }
}

var wndPrint = null;

function openPrintWindow(url) {
  if(wndPrint == null || wndPrint.closed)  {
    wndPrint = window.open(url, "printer", "toolbar=no,menubar=no,scrollbars=yes,resizable=no,location=no,width=750,height=500");
  } else {
    window.blur();
    wndPrint.location.href=url;
    wndPrint.focus();
  }
}

var wndPhoto = null;

function openPhotoWindow(url,w,h) {
  if(wndPhoto == null || wndPhoto.closed)  {
    wndPhoto = window.open(url, "photo", "toolbar=no,menubar=no,scrollbars=yes,resizable=yes,location=no,height="+h+",width="+w);
  } else {
    window.blur();
    wndPhoto.location.href=url;
    wndPhoto.focus();
  }
}

var wndTool = null;

function openToolWindow(url) {
  if(wndTool == null || wndTool.closed)  {
    wndTool = window.open(url, "tool", "toolbar=no,menubar=no,scrollbars=yes,resizable=yes,location=no,width=750,height=500");
  } else {
    window.blur();
    wndHerramienta.location.href=url;
    wndHerramienta.focus();
  }
}


var tamanyoBody = "11px";
var tamanyo = 1.0;

var aElmDiv = new Array();
aElmDiv[0] = 'colContenido';
aElmDiv[1] = 'colCentro';

function fijarTamanyo(tamanyo) {
  	tamanyoTexto=tamanyo+'em';

  	var elmDiv = null;
  	for(var i=0; i < aElmDiv.length; i++) {
		elmDiv = document.getElementById(aElmDiv[i]);
   	if(elmDiv != null) {
   		elmDiv.style.fontSize=tamanyoTexto;
		}
	}
}

function aumentarTamanyo() {
  if (tamanyo==null)
	tamanyo=1.0;
  if (tamanyo<1.6)
	tamanyo=eval(tamanyo)+0.1;
  fijarTamanyo(tamanyo);
}

function disminuirTamanyo() {
  if (tamanyo==null)
	tamanyo=1.0;
  if (tamanyo>0.7)
	tamanyo=eval(tamanyo)-0.1;
  fijarTamanyo(tamanyo);
}

function iniciarTamanyo() {
  if (tamanyo==null)
	tamanyo=tamanyoBody;
  fijarTamanyo(tamanyo);
}

function reestablecerTamanyo() {
  tamanyo = 1.0;
  fijarTamanyo(tamanyo);
}