//Define your images using arbitrary variables, to be passed in as arguments later down the page:
var b1 = ''
var b2 = ''
var b3 = ''
var b4 = ''
var b5 = ''
var b6 = ''
var b7 = ''
var b8 = ''
var b9 = ''
var b10 = ''
var b11 = ''
var b12 = ''
var b13 = ''
var b14 = ''
var b15 = ''
var b16 = ''
var b17 = ''
var b18 = ''
var b19 = ''
'
var b2 = '
'
var b3 = '
'
var b4 = '
'
var b5 = '
'
var b6 = '
'
var b7 = '
'
var b8 = '
'
var b9 = '
'
var b10 = '
'
var b11 = '
'
var b12 = '
'
var b13 = '
'
var b14 = '
'
var b15 = '
'
var b16 = '
'
var b17 = '
'
var b18 = '
'
var b19 = '
'