refferlist[rnumber] = new Array("9784897066745","研究室へようこそ！",248);rnumber++;
refferlist[rnumber] = new Array("9784758107198","ラボノートの書き方",564);rnumber++;
refferlist[rnumber] = new Array("9784897064796","科学英語論文の赤ペン添削講座",146);rnumber++;
refferlist[rnumber] = new Array("9784758108348","困った状況も切り抜ける医師・科学者の英会話",510);rnumber++;
refferlist[rnumber] = new Array("9784897064895","相手の心を動かす英文手紙とe-mailの効果的な書き方",201);rnumber++;
refferlist[rnumber] = new Array("9784897064871","国際学会のための科学英語絶対リスニング",14);rnumber++;
refferlist[rnumber] = new Array("9784758108010","ライフサイエンス英語類語使い分け辞典",440);rnumber++;
refferlist[rnumber] = new Array("9784897068794","プレゼンテーションの基本",322);rnumber++;
refferlist[rnumber] = new Array("9784758108102","改訂第2版　PowerPointのやさしい使い方から学会発表まで",497);rnumber++;
refferlist[rnumber] = new Array("9784897068879","パソコンのやさしい使い方",330);rnumber++;

target_book_random = new Array();
for(i = 0;i < refferlist.length;i++){
	target_book_random[i] = new Array(refferlist[i],Math.random());
}

target_book_random.sort(pickup);