function overstar(idElement,rate){
for(i=1; i<=5; i++){
if(i <= rate){
document.getElementById(idElement+'_'+i).style.backgroundPositionY = "20px";
} else {
document.getElementById(idElement+'_'+i).style.backgroundPositionY = "10px";
}
}
}
/* star "off" on mouse out */
function outstar(idElement,rate){
if(outstar_check == 0){
rate = rate;
} else {
rate = rateN;
}
for(i=1; i<=5; i++){
if(i<=rate){
document.getElementById(idElement+'_'+i).style.backgroundPositionY = "30px";
} else {
document.getElementById(idElement+'_'+i).style.backgroundPositionY = "10px";
}
}
}


var idElementN=0;
var rateN=0;
var nocache=0;
var outstar_check=0;

function rateStar(idElement,rate){ // idElement is the id_post_pk
idElementN=idElement;
rateN=rate;
outstar_check=1;
nocache=Math.random();
http.open('get', 'ratePost.cfm?idElement='+idElement+'&rate='+rateN+ '&nocache='+nocache);
http.onreadystatechange = ratestarReply;
http.send(null);
}
function rateStarReply() {
if(http.readyState == 4){
var response = http.responseText;
document.getElementById('rate'+idElementN).innerHTML = response;
} }