Aide pour correction d'un javascript matrix sous Firefox

  <SCRIPT language=JavaScript>
if (document.all){
Cols=4;
Cl=20;
Cs=15;
Ts=14;
Tc='#008800';
Tc1='#00ff00';
MnS=6;
MxS=6;
I=Cs;
Sp=new Array();S=new Array();Y=new Array();
C=new Array();M=new Array();B=new Array();
RC=new Array();E=new Array();Tcc=new Array(0,0);
document.write("<div id='Container' style='position:absolute;top:0;right:-"+Cs+"'>");
document.write("<div style='position:relative'>");
for(i=0; i < Cols; i++){
S[i]=I+=Cs;
document.write("<div id='A' style='position:absolute;top:0;font-family:comic sans ms;font-size:"
+Ts+"px;right:"+S[i]+";width:"+Ts+"px;height:0px;color:"+Tc+";visibility:hidden'></div>");
}
document.write("</div></div>");

for(j=0; j < Cols; j++){
RC[j]=1+Math.round(Math.random()*Cl);  
Y[j]=0;
Sp[j]=Math.round(MnS+Math.random()*MxS); 
for(i=0; i < RC[j]; i++){
 B[i]='';
 C[i]=Math.round(Math.random()*1)+' ';
 M[j]=B[0]+=C[i];
 }
}
function Cycle(){
Container.style.top=window.document.body.scrollTop;
for (i=0; i < Cols; i++){
var r = Math.floor(Math.random()*Tcc.length);
E[i] = '<font color='+Tc1+'>'+Tcc[r]+'</font>';
Y[i]+=Sp[i];

if (Y[i] > window.document.body.clientHeight){
 for(i2=0; i2 < Cols; i2++){
 RC[i2]=1+Math.round(Math.random()*Cl);  
 for(i3=0; i3 < RC[i2]; i3++){
 B[i3]='';
 C[i3]=Math.round(Math.random()*1)+' ';
 C[Math.floor(Math.random()*i2)]=' '+' ';
 M[i]=B[0]+=C[i3];
 Y[i]=-Ts*M[i].length/1.5;
 A[i].style.visibility='visible';
 }
 Sp[i]=Math.round(MnS+Math.random()*MxS);
 }
}
A[i].style.top=Y[i];
A[i].innerHTML=M[i]+' '+E[i]+' ';
}
setTimeout('Cycle()',20)
}
Cycle();
}
<!--Fin du Script-->
</SCRIPT>