davvero interessante, visto che pero' ho letto che nessuno risponde e visto che la pagina di registrazione di clicktale ha un formato sospetto ho fatto tasto dx --> visualizza sorgente ed ho trovato quest'interessante javascript:
var WRWarn="Copyright 2006 ClickTale Ltd., US Patent Pending",WRA,WRD=document,WRv,WRL,WRE="http://www.clicktale.net/",WRAR="http://s.clicktale.net/",WRAI=/www\.clicktale\.net/i,WRn,WRB=new Array(),WRw;if(WRD.domain.indexOf(".")==-1){WRAR=WRE="http://nexuson/CTN/";WRAI=/\/nexuson\/CTN/i;};if(typeof WRInitTime=="undefined")var WRInitTime=(new Date()).getTime();if(WRD.addEventListener)WRD.addEventListener("DOMContentLoaded",WRondomload,false);WRw=(WRD.compatMode=='BackCompat');WRv=(WRw?WRD.body:WRD.documentElement);WRo(window,"load",WRf);function ClickTale(Project,Prob){WRn=WRp();if(!WRn)return;if(ClickTaleIsPlayback())return;if(Prob==undefined)Prob=1;WRL=WRl("WRUID");if(WRL==null){if(Math.random()<Prob)WRL=WRH();else WRL=0;};WRk("WRUID",WRL,30);if(WRL==0||(WRl("WRUID")==null&&Prob!=1))return;WRC({a:"start",t:WRI()});WRA=Project;var i=new Image();i.src=WRE+"i/"+WRA+".gif?"+WRH();i.onload=function(){WRG(i);};};function ClickTaleIsPlayback(){return WRD.referrer.search(WRAI)!=-1;};function WRG(i){var s=WRD.createElement("script");s.src=WRAR+"WR"+"7"+(i.width>1?"S"+i.width:"")+"b.js";var dd=WRD.getElementById("ClickTale")||WRD.body;dd.appendChild(s);};function WRH(){return Math.floor(Math.random()*2000000000);};function WRI(){return(new Date()).getTime()-WRInitTime;};function WRC(m){if(typeof WRc=='function')WRc(m);else WRB.push(m);};function WRf(){WRC({a:"load",w:WRs(),h:WRt(),sw:WRv.scrollWidth,sh:WRv.scrollHeight,cw:WRv.clientWidth,ch:WRv.clientHeight,t:WRI()});};function WRs(){return self.innerWidth||WRv.offsetWidth;};function WRt(){return self.innerHeight||WRv.offsetHeight;};function WRk(name,value,days){if(days){var date=new Date();date.setTime(date.getTime()+(days*86400000));var expires="; expires="+date.toGMTString();}else var expires="";WRD.cookie=name+"="+value+expires+"; path=/";};function WRl(name){var nameEQ=name+"=";var ca=WRD.cookie.split(';');for(var i=0;i<ca.length;i++){var c=ca*;while(c.charAt(0)==' ')c=c.substring(1,c.length);if(c.indexOf(nameEQ)==0)return c.substring(nameEQ.length,c.length);};return null;};function ClickTaleTag(c){WRC({a:"tag",c:c,t:WRI()});};function ClickTaleNote(c){WRC({a:"note",c:c,t:WRI()});};function ClickTaleField(f,v){WRC({a:"field",f:f,v:v,t:WRI()});};function ClickTaleIgnore(Days){WRk("WRUID",0,Days);};function WRondomload(){if(ClickTaleIsPlayback())return;var b,h,d;d=WRD.documentElement.innerHTML;var reg=new RegExp("(<div id=\"?ClickTale\"?[^>]+>)\\s*<script[^>]+></script>\\s*(</div>)","i");d=d.replace(reg,"$1$2");h=WRAO(d);d=WRD.body.innerHTML;d=d.replace(reg,"$1$2");b=WRAO(d);WRC({a:"domload",h:h,b:b,t:WRI()});};function WRAO(s){var l=s.length,a=0xffff,b=a,i=0;while(l){var tlen=l>360?360:l;l-=tlen;do{a+=s.charCodeAt(i++);b+=a;}while(--tlen);a=(a&0xffff)+(a>>>16);b=(b&0xffff)+(b>>>16);};a=(a&0xffff)+(a>>>16);b=(b&0xffff)+(b>>>16);return b*65536+a;};function WRp(){var ua=navigator.userAgent;if(ua.indexOf("Opera ")!=-1)return;if(ua.indexOf("MSIE 6.0")!=-1)return"IE6";if(ua.indexOf("MSIE 7.0")!=-1)return"IE7";if(ua.indexOf("Firefox/1.5")!=-1)return"FF15";};function WRo(e,t,fn){if(e.addEventListener)e.addEventListener(t,fn,false);else if(e.attachEvent)e.attachEvent('on'+t,fn);};
Da profano mi sembra proprio il fantomatico codice che traccia, chiedo conferma ad un esperto javascripter