var img_width = "754";
			var img_height = "101";
			var img_title = "BMNH";
			var ad=new Array()
			//insert here your images src
ad[0]='/images/banners/banner1.jpg';
ad[1]='/images/banners/banner2.jpg';
ad[2]='/images/banners/banner3.jpg';
ad[3]='/images/banners/banner4.jpg';
ad[4]='/images/banners/banner5.jpg';
ad[5]='/images/banners/banner6.jpg';
ad[6]='/images/banners/banner7.jpg';
ad[7]='/images/banners/banner8.jpg';
ad[8]='/images/banners/banner9.jpg';
ad[9]='/images/banners/banner10.jpg';
ad[10]='/images/banners/banner11.jpg';
ad[11]='/images/banners/banner12.jpg';
ad[12]='/images/banners/banner13.jpg';
ad[13]='/images/banners/banner14.jpg';
ad[14]='/images/banners/banner15.jpg';
ad[15]='/images/banners/banner16.jpg';
ad[16]='/images/banners/banner17.jpg';
ad[17]='/images/banners/banner18.jpg';
ad[18]='/images/banners/banner19.jpg';
ad[19]='/images/banners/banner20.jpg';
ad[20]='/images/banners/banner21.jpg';
ad[21]='/images/banners/banner22.jpg';
ad[22]='/images/banners/banner23.jpg';
ad[23]='/images/banners/banner24.jpg';
ad[24]='/images/banners/banner25.jpg';
ad[25]='/images/banners/banner26.jpg';
ad[26]='/images/banners/banner27.jpg';
ad[27]='/images/banners/banner28.jpg';
ad[26]='/images/banners/banner27.jpg';
ad[27]='/images/banners/caecilian1.jpg';
ad[28]='/images/banners/caecilian2.jpg';
ad[29]='/images/banners/caecilian3.jpg';
ad[30]='/images/banners/caecilian4.jpg';
ad[31]='/images/banners/people1.jpg';
ad[32]='/images/banners/people2.jpg';
ad[33]='/images/banners/people3.jpg';
ad[34]='/images/banners/people4.jpg';
			
			var xy=Math.floor(Math.random()*ad.length);
			document.write('<img src="'+ad[xy]+'" width="'+img_width+'" height="'+img_height+'" alt="'+img_title+'">');