The name of a old anime?

the entire anime series is kind of fuzzy but of what i do remember, to help you getter a better idea of what it might be, is that these kids find a lab,or whatever you would call it since i vaguely remember it (machinery type), that has this machine that allows several people to be digitalized ( i think thats what they called it in the series) into challenge worlds but the only reason why they do it is because upon activating the machine they released a enemy that is trying to take over there world, and it just so happens that the machine is able to revert all the damage done by the enemy, i think the things name was zane or something like that, by going to before the corruption in their world started happening, though the enemy didnt do the same thing in which he just did another attack at a different time in their world. in the worlds that they went to there was a pink ( i think thats the color) haired girl that helped them in which they later bring into their world. the guy that is at the mainframe (if you would call it that) that watches over and helps. i think his name was Jeromy. oh and each time they reverted there would always be like a white half-sphere that would slowly encase the area, i think it was probably the entire world, and after it was done all the damage was gone and it was back to a few minutes i believe before the damage started.