if(self.opener)window.addEventListener('load',opener.appSty, false);
function print_preview(){ newWin=window.open(this.location.href,''); }
function appSty(){
var win_style=newWin.document.createElement('link');
win_style.href="/stylesheets/events_print.css";
win_style.rel="stylesheet";
win_style.type="text/css";
newWin.document.getElementsByTagName('head')[0].appendChild(win_style);
newWin.focus();
setTimeout(function(){newWin.print()},50)}