function r_sc(href,rnd)
{
if (rnd) href+=(/\?/.test(href)?'&':'?')+"rnd="+(new Date().getTime());
var script = document.createElement('SCRIPT'); 
script.setAttribute('type','text/javascript'); 
script.setAttribute('src',href); 
document.documentElement.firstChild.appendChild(script);
}



function gid(id)
{
return document.getElementById(id);
}

function addEventTo (obj, event, handler) 
{
var altEN = 'on'+event;
if (obj.attachEvent)
obj.attachEvent (altEN, handler);
else if (obj.addEventListener)
obj.addEventListener (event, handler, false);
else
return null;
}