//---TZAUTOGENERATED---
// tag_version=4.3.0
var tz_appBase_00014073 = "http://ad.uk.tangozebra.com/";
var tz_file_base_00014073 = "http://m.tangozebra.com/";
var tz_advertBase_00014073 = "00014073/";
var tz_creative_codebase_00014073;
var tz_click_base_00014073 = tz_appBase_00014073 + 'a/ac/';
var tz_refID_00014073 = 'newscientist_news';
var tz_referrer_id_00014073 = '361';
var tz_iframeHostFile_00014073="";
var tz_launchWin_00014073="true";
var tz_impression_00014073=new Array();
var tz_url_00014073=new Array();
var tz_clickName_00014073=new Array();
var tz_encodeTarget=true;
var tz_capped_00014073 = false;
//following is legacy support for tz_force without ad number
if(typeof tz_force != 'undefined')tz_force_00014073=tz_force;
//#CAPPING_VARIABLES#
//
var cookies_00014073=false;

//
var tz_ind_00014073=0;
var tz_trackArr_00014073=new Array;
function tz_track_00014073(ev, c_id){
    var tz_rnd2 = Math.random();
    tz_trackArr_00014073[tz_ind_00014073] = new Image();
    tz_trackArr_00014073[tz_ind_00014073].src = tz_appBase_00014073 + "a/at/" + ev + "/14073/361/" + c_id + ";" + tz_rnd2 + "?";
    tz_ind_00014073++;
}

var tz_creatives_00014073=new Array();
var tz_creativeWeights_00014073 = new Array();
var tz_creative_ids_00014073 = new Array();
var tz_plcrFileWeights_00014073 = new Array();
var tz_creative_is_video_00014073 = new Array();
var tz_creative_js;
//
tz_creatives_00014073[0]='NewScientistExpSky_2';
tz_creative_ids_00014073[0]=131267;
tz_creativeWeights_00014073[0]=10;
tz_plcrFileWeights_00014073[0]='23241';
tz_creative_is_video_00014073[0]=false;

//
var tz_linkID_00014073 = new Array();
var tz_notLinkID_00014073 = new Array();
tz_linkID_00014073[0]="";
tz_notLinkID_00014073[0]="";


//---TZLOGIC---
function tz_seen_00014073() {
    if (!cookies_00014073 || parent.loader) {
	return; 
    }
    tz_sessionData_00014073.visits ++;
    tz_sessionData_00014073.active = 1;  
    tz_sessionData_00014073.store();
    if(tz_maxPeriodViews_00014073 != 10000){
	tz_periodData_00014073.visits ++;
	tz_periodData_00014073.store();
    }
    //#CHOOSE_NEXT_CREATIVE#
}

function tz_cookieOk_00014073() {
    //#FILTER_RATE_CODE#
    return (!cookies_00014073 || (tz_periodData_00014073.visits < tz_maxPeriodViews_00014073 && tz_sessionData_00014073.visits < tz_maxSessionViews_00014073));
}

if ((typeof(tz_iframeSrc_00014073) !="undefined" && tz_cookieOk_00014073()) || (((typeof(tz_iframeSrc_00014073)=="undefined" && tz_force_00014073>-1 ) || tz_cookieOk_00014073()) && tz_creatives_00014073.length>0)) {

    
var r = Math.floor(Math.random()*10);
var i=0;
var tz_current_00014073;
for (i=0;i<tz_creativeWeights_00014073.length;i++) {
    if (r<tz_creativeWeights_00014073[i]) {
	tz_current_00014073=i;
	break;
    }
}

    if (tz_force_00014073>-1) {
	tz_current_00014073=tz_force_00014073;
    }
    var tz_cid_00014073 = tz_creative_ids_00014073[tz_current_00014073];
    var tz_folder_00014073 = tz_creatives_00014073[tz_current_00014073]+'/';
    var tz_date_00014073=(tz_creative_is_video_00014073[tz_current_00014073])?Math.random():'20070704171716';
    var tz_plcrfilesize_00014073=parseInt(tz_plcrFileWeights_00014073[tz_current_00014073]);
    tz_creative_js='c_'+tz_refID_00014073+'_'+tz_cid_00014073+'.js?tz_rnd='+tz_date_00014073;
    tz_creative_codebase_00014073 = tz_file_base_00014073+tz_advertBase_00014073 + tz_folder_00014073;
    if(typeof(tz_iframeSrc_00014073) != "undefined") {
	var tzscript = document.createElement("script");
	tzscript.src = tz_creative_codebase_00014073 + tz_creative_js;
	document.body.appendChild(tzscript);
    } else {
	if (cookies_00014073) tz_track_00014073("a", tz_cid_00014073);
	var tz_startTime_00014073 = new Date().getTime();
	document.write('<scr' + 'ipt language="javascript1.1" type="text/javascript" src="' + tz_creative_codebase_00014073 + tz_creative_js + '">' + '</' + 'script>');
    }
} else {
    tz_track_00014073("u", 0);
    tz_capped_00014073 = true;
}
//---TZLOGICEND---
//---TZEND---

