function BlockBack() {
	if(window.history.forward(1) != null)
    	window.history.forward(1);
}

function myopen(filename,windowname,properties) {
  mywindow = window.open(filename,windowname,properties);
}

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];}}
    BlockBack();
	
}

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_findObj(n, d) { //v4.0
  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 && document.getElementById) x=document.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];}
}

function PrintWindow() {
window.print();
window.close();
}

function PrintConfirm() {
  if (confirm("Recuerda configurar tu impresora en formato horizontal (Landscape) dentro de la opcion de Propiedades, para que al imprimir aparezca tu documento completo.")) PrintWindow()
}

function DoSubmit(value) {
   document.FORMA1.EWFBUTTON.name = 'EWF_BUTTON_'+value;
   document.FORMA1.EWFBUTTON.value = value;
   document.FORMA1.submit();
}

//verising
function popUp(URL) {
  window.open(URL,"miventana","width=760,height=500,left=10,top=0,scrollbars,resizable");
}
// -->

function ventana(liga2) {
   
   window.open(liga2,'windowname','toolbar=yes,menubar=no,scrollbars=yes,width=750,height=350')
}