function setZoom(id_tag)
{
	var myValues = $(id_tag).getCoordinates();
	var size = $(id_tag).getSize();
	$('zoom').setStyle('display', 'block');
	$('zoom').setStyle('top', myValues.top);
	$('zoom').setStyle('left', size.x + (myValues.left - 70));
}

function changeimg(img_name,img_src) {
	if (document.getElementById) {
  document.getElementById(img_name).src = img_src;
	}
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function hidelayer(objectId) {
    var styleObject = getStyleObject(objectId);
    if (styleObject) {
		styleObject.display = "none";	
		return true;
    } else {
	return false;
    }
}

function showlayer(objectId) {
    var styleObject = getStyleObject(objectId);
    if (styleObject) {
		styleObject.display = "block";
	return true;
    } else {
	return false;
    }
}
// cambia los tabs
function changetab(tab)
{
	$('main-tab').removeClass('selected');
	$('tours-tab').removeClass('selected');
	$('photo-tab').removeClass('selected');
	$('media-tab').removeClass('selected');
	$(tab).addClass('selected');
}

// function to increase/decrease font
counterDec = 12;
function increaseFont()
{ 
	if (counterDec < 14)
		{ counterDec = counterDec + 1;}
	$('content').setStyle('font-size', counterDec+'px');
}
	
function decreaseFont()
{
	if (counterDec > 10)
		{ counterDec = counterDec - 1;}
	$('content').setStyle('font-size', counterDec+'px');
}

// calcular alto de iframe automaticamente
function calcHeight()
{
  //find the height of the internal page
  var the_height=
    document.getElementById('imedia').contentWindow.
      document.body.scrollHeight;

  //change the height of the iframe
  document.getElementById('imedia').height=
      the_height;
}
// funciones de dreamweaver
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];}
}

// contadore de caracteres 
function CheckFieldLength(fn,rn,mc) {
  var len = fn.value.length;
  if (len > mc) {
    fn.value = fn.value.substring(0,mc);
    len = mc;
  }
 // document.getElementById(wn).innerHTML = len;
  document.getElementById(rn).innerHTML = mc - len;
}

function toggle_div(div)
{
	var divtoggle = new Fx.Slide(div);
	divtoggle.toggle();
}