', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '' ]; // 四角(336×280/300×250)バナーコード一覧 var squareBannersHtml = [ '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '' ]; // ランダムかつ重複なし2つ取得 function pickUnique(arr) { var tmp = arr.slice(), out = []; for (var i=0; i<2 && tmp.length; i++) { var idx = Math.floor(Math.random() * tmp.length); out.push(tmp.splice(idx,1)[0]); } return out; } var chosenLong = pickUnique(longBannersHtml); var chosenSquare = pickUnique(squareBannersHtml); // HTML注入 & script実行 function inject(id, html) { var c = document.getElementById(id); c.innerHTML = html; var old = c.querySelector("script"); var n = document.createElement("script"); n.src = old.src; n.className = old.className; old.parentNode.replaceChild(n, old); } inject("banner-top-left", chosenLong[0]); inject("banner-top-right", chosenLong[1]); inject("banner-bottom-left",chosenSquare[0]); inject("banner-bottom-right",chosenSquare[1]);