function roll(img_name1, img_src1, img_name2, img_src2, img_name3, img_src3, img_name4, img_src4, img_name5, img_src5, img_name6, img_src6, 
				img_name7, img_src7, img_name8, img_src8, img_name9, img_src9, img_name10, img_src10)
   {  
   document[img_name1].src = img_src1;
   document[img_name2].src = img_src2;
   document[img_name3].src = img_src3;
   document[img_name4].src = img_src4;
   document[img_name5].src = img_src5;
   document[img_name6].src = img_src6;
   document[img_name7].src = img_src7;
   document[img_name8].src = img_src8;
   document[img_name9].src = img_src9;
   document[img_name10].src = img_src10;
   }