pic = new Array(2);
pic[0] ='http://matin2010.persiangig.com/other/1.jpg'
pic[1] ='http://matin2010.persiangig.com/other/2.jpg'
pic[2] ='http://matin2010.persiangig.com/other/3.jpg'
pic[3] ='http://matin2010.persiangig.com/other/4.jpg'
pic[4] ='http://matin2010.persiangig.com/other/5.jpg'
pic[5] ='http://matin2010.persiangig.com/other/6.jpg'
index = Math.floor(Math.random() * pic.length);