document.writeln("");
document.write("\n");
document.write(" \n");
document.write(" | \n");
document.write("
\n");
document.write("
\n");
var sum = 4
var s = Math.random();
var n = Math.round(s*(sum-1))+1;
switch(n)
{
case 1:
document.writeln("");
break;
case 2:
break;
};