link = new Array( 20 );
link[0] = "Extra/Serifu/Yui2.html";
link[1] = "Extra/Serifu/Yui10.html";
link[2] = "Extra/Serifu/Yui11.html";
link[3] = "Extra/Serifu/Yui12.html";
link[4] = "Extra/Serifu/Yui13.html";
link[5] = "Extra/Serifu/Ai1.html";
link[6] = "Extra/Serifu/Haru2.html";
link[7] = "Extra/Serifu/Haru3.html";
link[8] = "Extra/Serifu/Cont1.html";
link[9] = "Extra/Serifu/Syn1.html";
link[10] = "Extra/Serifu/Syn2.html";
link[11] = "Extra/Serifu/Ante1.html";
link[12] = "Extra/Serifu/Eco1.html";
link[13] = "Extra/Serifu/Resc3.html";
link[14] = "Extra/Serifu/Resc4.html";
link[15] = "Extra/Serifu/Foll1.html";
link[16] = "Extra/Serifu/Foll2.html";
link[17] = "Extra/Serifu/Peace1.html";
link[18] = "Extra/Serifu/Ir1.html";
link[19] = "Extra/Serifu/Taiyou.html";

function WinOpen() {
rand = Math.floor( Math.random() * 20 );
window.open(link[rand],"","status=0,menubar=0,width=266,height=287")
}