// <![CDATA[

// ----------------------------------------------------------------------

// Rotate content display -- Ken True -- saratoga-weather.org

// This script is for use with the ajaxwx.js to create a rotating gizmo

// display of AJAX conditions marked with <span class="contentN" style="display: none"></span>

// where N=0..8

//

//  Version 1.00 - initial release

//  Version 1.01 - changed to look for class="ajaxcontentN" to prevent interference with buoy-data.php

//  Version 1.02 - fixed rotation for Internet Explorer 8

// 

//

// --------- begom settomgs ---------------------------------------------------------------

var ajaxrotatedelay=4000; // Rotate display every 4 secs (= 4000 ms)

var showUV = true ;       // set to false if you don't have a Davis VP UV sensor

// --------- emd settomgs -----------------------------------------------------------------

//

// you shouldn't need to change things below this line

//

var ie4=document.all;

var browser = navigator.appName;

var ie8 = false;

if (ie4 && /MSIE (\d+\.\d+);/.test(navigator.userAgent)){ //test for MSIE x.x;

 var ieversion=new Number(RegExp.$1) // capture x.x portion and store as a number

 if (ieversion>=8) {

   ie4=false;

   ie8=true;

 }

}

var ajaxcurindex = 0;

var ajaxtotalcontent = 0;

var ajaxrunrotation = 1;

var browser = navigator.appName;



function get_content_tags ( tag ) {

// search all the span tags and return the list with class=tag 

//

  if (ie4 && browser != "Opera" && ! ie8) {

    var elem = document.getElementsByTagName('span');

	var lookfor = 'className';

  } else {

    var elem = document.getElementsByTagName('span');

	var lookfor = 'class';

  }

     var arr = new Array();

	 var i = 0;

	 var iarr = 0;

	 

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

          var att = elem[i].getAttribute(lookfor);

          if(att == tag) {

               arr[iarr] = elem[i];

               iarr++;

          }

     }



     return arr;

}





function ajax_get_total() {

	ajaxtotalcontent = 8; // content0 .. content7 

	if (showUV) { ajaxtotalcontent++ ; } // UV display is in last content area

}



function ajax_contract_all() {

  for (var y=0;y<ajaxtotalcontent;y++) {

      var elements = get_content_tags("ajaxcontent"+y);

	  var numelements = elements.length;

//	  alert("ajax_contract_all: content"+y+" numelements="+numelements);

	  for (var index=0;index!=numelements;index++) {

         var element = elements[index];

		 element.style.display="none";

      }

  }

}



function ajax_expand_one(which) {

  ajax_contract_all();

  var elements = get_content_tags("ajaxcontent"+which);

  var numelements = elements.length;

  for (var index=0;index!=numelements;index++) {

     var element = elements[index];

	 element.style.display="inline";

  }

}

function ajax_step_content() {

  ajax_get_total();

  ajax_contract_all();

  ajaxcurindex=(ajaxcurindex<ajaxtotalcontent-1)? ajaxcurindex+1: 0;

  ajax_expand_one(ajaxcurindex);

}

function ajax_set_run(val) {

  ajaxrunrotation = val;

  ajax_rotate_content();

}

function ajax_rotate_content() {

  if (ajaxrunrotation) {

    ajax_get_total();

    ajax_contract_all();

    ajax_expand_one(ajaxcurindex);

    ajaxcurindex=(ajaxcurindex<ajaxtotalcontent-1)? ajaxcurindex+1: 0;

    setTimeout("ajax_rotate_content()",ajaxrotatedelay);

  }

}



ajax_rotate_content();



// ]]>