// resize fix for ns4

var origWidth, origHeight;

if (document.layers) {

    origWidth = window.innerWidth; origHeight = window.innerHeight;

    window.onresize = function() { if (window.innerWidth != origWidth || window.innerHeight != origHeight) history.go(0); }

}



var cur_lyr;    // holds id of currently visible layer



function showLayers() {

  args=showLayers.arguments;

  for (i=0;i<args.length;i++){

	  lyr = getElemRefs(args[i]);

	  if (lyr && lyr.css){

	   lyr.css.display = "block";



	   }

	}

}



function hideLayers() {

  args=hideLayers.arguments;

  for (i=0;i<args.length;i++){

  lyr = getElemRefs(args[i]);

  if (lyr && lyr.css) {

	lyr.css.display = "none";

  }

  }

}



function showLayer(id) {

  var lyr = getElemRefs(id);

  //if (lyr && lyr.css) lyr.css.visibility = "visible";

  if (lyr && lyr.css) lyr.css.display = "block";

  //alert ("Showing layer: "+ id + " " + lyr.css.display);

}



function hideLayer(id) {

  var lyr = getElemRefs(id);

  if (lyr && lyr.css) lyr.css.visibility = "hidden";

  if (lyr && lyr.css) lyr.css.display = "none";

}



function getElemRefs(id) {

    var el = (document.getElementById)? document.getElementById(id): (document.all)? document.all[id]: (document.layers)? getLyrRef(id,document): null;

    if (el) el.css = (el.style)? el.style: el;

    return el;

}



function getLyrRef(lyr,doc) {

    if (document.layers) {

        var theLyr;

        for (var i=0; i<doc.layers.length; i++) {

        theLyr = doc.layers[i];

            if (theLyr.name == lyr) return theLyr;

            else if (theLyr.document.layers.length > 0)

            if ((theLyr = getLyrRef(lyr,theLyr.document)) != null)

                    return theLyr;

      }

        return null;

  }

}



function hideIt(id) {

	MM_swapImage('Image3','','images/tab_moredetails2.gif',1);

}



function swapLayers(id) {

  //if (cur_lyr) hideLayer(cur_lyr);

  //showLayer(id);

  //alert (id);

 if      (id == 'layer1') {

     // MM_swapImage('Image1','','images/tab_keyfeatures1.gif',1);

      hideLayer('layer2');

     // MM_swapImage('Image2','','images/tab_specification0.gif',1);

     hideLayer('layer3');

	 showLayer('layer1');

      //MM_swapImage('Image3','','images/tab_moredetails0.gif',1);

  }

  else if (id == 'layer2') {

      //MM_swapImage('Image2','','images/tab_specification1.gif',1);

      //hideLayer('layer1');

     // MM_swapImage('Image1','','images/tab_keyfeatures0.gif',1);

     // hideLayer('layer3');

     // MM_swapImage('Image3','','images/tab_moredetails0.gif',1);

  }

  else if (id == 'layer3') {

     // MM_swapImage('Image3','','images/tab_moredetails1.gif',1);

     // hideLayer('layer1');

     // MM_swapImage('Image1','','images/tab_keyfeatures0.gif',1);

     // hideLayer('layer2');

    //  MM_swapImage('Image2','','images/tab_specification0.gif',1);

  }

  showLayer(id);

  //cur_lyr = id;

}



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];}

}