function fileLinks() {
var fileLink;
if (document.getElementsByTagName('a')) {
for (var i = 0; (fileLink = document.getElementsByTagName('a')[i]);i++) {
if (fileLink.href.indexOf('.pdf') != -1) {
fileLink.setAttribute('target', '_blank');
fileLink.className = 'pdfLink';
}
if (fileLink.href.indexOf('.doc') != -1) {
fileLink.setAttribute('target', '_blank');
fileLink.className = 'docLink';
}
if (fileLink.href.indexOf('.zip') != -1) {
fileLink.className = 'zipLink';
}
}
}
}


// load usefull functions

addEvent(window, 'load', fileLinks);