html encode y decode con jQuery From http://stackoverflow.com/questions/1219860/html-encoding-in-javascript-jquery
function htmlEncode(value){
//create a in-memory div, set it's inner text(which jQuery automatically encodes)
//then grab the encoded contents back out. The div never exists on the page.
return $('<div/>').text(value).html();
}
function htmlDecode(value){
return $('<div/>').html(value).text();
}