function limitTextarea(idTextarea,idCharRemaining,maxLength)
{
	var text=$("textarea[id="+idTextarea+"]").val();	
	$("span[id="+idCharRemaining+"]").empty().prepend(maxLength-text.length);
	if(text.length>maxLength)
	{
		$("span[id="+idCharRemaining+"]").empty().prepend('0');
		$("textarea[id="+idTextarea+"]").val(text.substring(0,maxLength));
	}
}