ToDay = new Date()
Month = 1 + ToDay.getMonth()

H = "center" ; V = "middle"

NbBackGrounds = 7

if(Month== 1)   Month = Month + NbBackGrounds ; 
if(Month== 2)   Month = Month + NbBackGrounds ; 
if(Month== 3)   Month = Month + NbBackGrounds ; 
if(Month== 4)   Month = Month + NbBackGrounds ; 
if(Month== 5)   BackGround="erdre"            ; 
if(Month== 6) { BackGround="zuelpich10"       ; V = "bottom" } ; 
if(Month== 7) { BackGround="32MC_825"         ; V = "bottom" } ; 
if(Month== 8) { BackGround="32MC_831"         ; V = "bottom" } ; 
if(Month== 9) { BackGround="32MC_903"         ; V = "bottom" } ; 
if(Month==10)   BackGround="meh"              ; 
if(Month==11) { BackGround="32MC_917"         ; V = "bottom" } ; 
if(Month==12) { BackGround="mc"               ; V = "bottom" } ; 

                        Size=1
if (screen.width<=2560) Size=2
if (screen.width<=1920) Size=3
if (screen.width<=1600) Size=4
if (screen.width<=1440) Size=5
if (screen.width<=1280) Size=6
if (screen.width<=1024) Size=7
if (screen.width<= 800) Size=8

document.write("<body style='background-color: #EBEFF2; color: #800000; ")
document.write("background-image: URL(http://www.microclass.org/images/back"+BackGround+"_")
document.write(Size+".jpg); background-repeat: no-repeat; background-position: "+V+" "+H+"; ")
document.write("background-attachment: fixed; margin-top: 10; margin-left: 10; margin-right:10'>")