pic = new Array(2);
pic[0] ='http://www.irjava.com/tip-day/1.bmp'
pic[1] ='http://www.irjava.com/tip-day/2.bmp'
pic[2] ='http://www.irjava.com/tip-day/3.bmp'
pic[3] ='http://www.irjava.com/tip-day/4.bmp'
pic[4] ='http://www.irjava.com/tip-day/5.bmp'
pic[5] ='http://www.irjava.com/tip-day/6.bmp'
pic[6] ='http://www.irjava.com/tip-day/7.bmp'
pic[7] ='http://www.irjava.com/tip-day/8.bmp'
pic[8] ='http://www.irjava.com/tip-day/9.bmp'
pic[9] ='http://www.irjava.com/tip-day/10.bmp'
pic[10] ='http://www.irjava.com/tip-day/11.bmp'
pic[11] ='http://www.irjava.com/tip-day/12.bmp'
pic[12] ='http://www.irjava.com/tip-day/13.bmp'
pic[13] ='http://www.irjava.com/tip-day/14.bmp'
pic[14] ='http://www.irjava.com/tip-day/15.bmp'
pic[15] ='http://www.irjava.com/tip-day/16.bmp'
pic[16] ='http://www.irjava.com/tip-day/17.bmp'
pic[17] ='http://www.irjava.com/tip-day/18.bmp'
pic[18] ='http://www.irjava.com/tip-day/19.bmp'
pic[19] ='http://www.irjava.com/tip-day/20.bmp'
index = Math.floor(Math.random() * pic.length);