var ajaxrotatedelay=4000;
var showUV = true ;
var ie4=document.all;
var browser = navigator.appName;
var ie8 = false;
if (ie4 && /MSIE (\d+\.\d+);/.test(navigator.userAgent)){ 
var ieversion=new Number(RegExp.$1)
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 ) {
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++ ; }
}
function ajax_contract_all() {
for (var y=0;y<ajaxtotalcontent;y++) {
var elements = get_content_tags("ajaxcontent"+y);
var numelements = elements.length;
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();