/**
 * ficus design - arenalvolcanotours.com 12/08/05
 * MISC JS FUNCTIONS
 *
 * FUNCTIONS: 
 *
 * HM_f_ToggleElementList(show,elList,toggleBy)			Hide/Show Toggle of Form Elements 
 * popwin(url, name, mh, mw)							.newwindow function mh=height, mw=width
 *
 * Plus assorted menu and dynamic image / menu functions such as preloadimages...
 */
   
   HM_DOM = document.getElementById ? true : false;
   HM_IE  = document.all ? true : false;
   HM_NS4 = document.layers ? true : false;

   function HM_f_ToggleElementList(show,elList,toggleBy) {
      if(!(HM_DOM||HM_IE||HM_NS4)) return true;

      if(HM_NS4&&(toggleBy=="tag")) return true;

      for(var i=0; i<elList.length; i++) {
         var ElementsToToggle = [];
         switch(toggleBy) {
            case "tag":
               ElementsToToggle = 
     (HM_DOM) ? document.getElementsByTagName(elList[i]) :
     document.all.tags(elList[i]);
               break;
            case "id":
               ElementsToToggle[0] = 
     (HM_DOM) ? document.getElementById(elList[i]) :
     (HM_IE) ? document.all(elList[i]) : 
     document.layers[elList[i]];
               break;
         }
         for(var j=0; j<ElementsToToggle.length; j++) {
            var theElement = ElementsToToggle[j];
            if(!theElement) continue;
            if(HM_DOM||HM_IE) {
               theElement.style.visibility = 
                  show ? "inherit" : "hidden";
            } else {
               theElement.visibility = 
                  show ? "inherit" : "hide";
            }
         }
      }
      return true;
   }

function popwin(url, name, mh, mw) {
    var newwindow;
	newwindow=window.open(url,'name',mh,mw,'left=100,top=100,resizable=yes,scrollbars=yes,toolbar=no,status=yes');
	//newwindow=window.open(url,'name',mh,mw);
	if (window.focus) {newwindow.focus()}
}

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_nbGroup(event, grpName) { //v6.0
  var i,img,nbArr,args=MM_nbGroup.arguments;
  if (event == "init" && args.length > 2) {
    if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
        if (!img.MM_up) img.MM_up = img.src;
        img.src = img.MM_dn = args[i+1];
        nbArr[nbArr.length] = img;
    } }
  } else if (event == "over") {
    document.MM_nbOver = nbArr = new Array();
    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : ((args[i+1])? args[i+1] : img.MM_up);
      nbArr[nbArr.length] = img;
    }
  } else if (event == "out" ) {
    for (i=0; i < document.MM_nbOver.length; i++) {
      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }
  } else if (event == "down") {
    nbArr = document[grpName];
    if (nbArr)
      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = img.MM_dn = (args[i+1])? args[i+1] : img.MM_up;
      nbArr[nbArr.length] = img;
  } }
}