var nr_char=new Array;
nr_char[0]='0';
nr_char[1]='1';
nr_char[2]='2';
nr_char[3]="3";
nr_char[4]='4';
nr_char[5]='5';
nr_char[6]='6';
nr_char[7]='7';
nr_char[8]='8';
nr_char[9]='9';
nr_fic='9999';

function rnd_nr(char_limite)
{
nr_=Math.round(Math.random()*char_limite);
char=nr_char[nr_];
return char;
}
function fic_nr(str_limite)
{
while(nr_fic>str_limite){
	nr_fic='0'+'0'+rnd_nr(3)+rnd_nr(9);
//	alert(nr_fic);
	}
return nr_fic;
}
src_str='http://www.cege.net/midi/soft'+fic_nr('0030')+'.mid';
document.write('<BGSOUND SRC='+src_str+' loop=infinite>');