var showLength = 80 ; // •\Ž¦•¶Žš”

onload = function() {
	elements = document.getElementsByTagName("span") ;
	for (var i = 0; i < elements.length; ++i)
	with (elements[i])
	if (className == "topics-text" && innerHTML.length > showLength)
	innerHTML = innerHTML.substr(0, showLength) + '…' ;
}