gistfile1.txt

//ensure that the user does not put in too many '/' and ensures that only
//underground blips can be subblips of underground blips.
cleanPath = function(path){
    return path.split('/').reduce(function(prev,curr){
        if (curr!=''){
            if (prev.search('_')>-1){
                if (curr.search('_')>-1){
                    return prev+=curr+'/';
                } else {
                    return prev+='_'+curr+'/';
                }
            } else {
                return prev+=curr+'/';
            }
        } else {
            return prev;
        }
    },'');
}