var url_postfix;
var rm_maxnum = 107;
var Post = new Array(); 
for(i=0;i<4;i++){
	Post[i] = -1;
}
for(i=0;i<4;i++){
	do{
		url_postfix = Math.round(Math.random()*(rm_maxnum-1))+1;
	}while(url_postfix == Post[0]|url_postfix == Post[1]|url_postfix == Post[2]|url_postfix == Post[3])
	Post[i] = url_postfix;
}