function RandomBn(x) {
f = 2;

var Num = new Array(f - 1);
var Chk = new Array(f - 1);
var Mess = new Array(f - 1);

//***ここに広告表示HTMLの配列作成
Mess[0] = '<a href="http://fc-king.com/" onClick="javascript:urchinTracker (\'バナーフランチャイズ\'); " target="_blank"><img src="http://www.sigyo.net/img/bn_fc-king.gif" width="486" height="72" ></a>';
Mess[1] = '<a href="http://www.sigyo.net/web/sample.html" onClick="javascript:urchinTracker (\'バナーおまかせ\'); " target="_blank"><img src="http://www.sigyo.net/img/bn_web_ani.gif" width="486" height="60" ></a>';


//***
for (i=0;i<f;i++) //
{
	Num[i] = Math.floor(Math.random()*f);
	if (Chk[Num[i]]  == 1){
		while(Chk[Num[i]] == 1){
		Num[i] = Math.floor(Math.random()*f);
			}
			Chk[Num[i]] = 1;
		}
		else {
			Chk[Num[i]] = 1;
		}
	}
	

	for (i=0;i<x;i++) //
	{
		document.write('');
		document.write(Mess[Num[i]]);
		document.write("");
	}
document.write('');
}