I know about Bipolar disorder and how you swing from one end to the other but?

is their a mild form of it? I mean the way it sounds is youre flying high for days and then flying low for days but, is their a mild form of this? Meaning in hours form and not days form?

Yes, there definitely is. There are several different types of bipolar disorder. Type I is the classic manic depressive, like we see in the movies, severe mood swings, not sleeping when in a manic stage, etc. There is also Type II & Type III which are both less severe. I have type II bipolar disorder and my manic phases usually only last hours, while my depressive phases have lasted weeks or months at a time. I was originally diagnosed as having chronic depression and it wasn't until I started "rapid cycling" on the antidepressants that I was properly diagnosed. Everyone is affected differently and only a psychiatrist can diagnose you correctly.

Borderline Personality Disorder would be considered a lesser from---so I've been told.
In most cases, Bipolar people do not cycle from hour to hour. The mood episodes last for days. There are people who rapid-cycle, but that is fairly rare.

Bipolar 1 is traditional bipolar. Mania and depression
Bipolar 2 is hypomania and depression, mostly depression.
Then there are the soft bipolars which are less severe forms of these.

But in most cases, rapid-cycling does not happen. Most Bipolar people experience mood episodes for days to weeks to months.
If your looking for short answers yes, yes and yes.
I say there are 6 levels to BP and you will never get the answers you seek in here. Visit sites about the issue as there are many good ones like http://dbsa.invisionzone.com/
This site is good because it has a support forum for those effected with BP and also for family and friends of those effected. It is also a great site for those with depression as well.
Stay well :)
Bipolar disorder, especially in children, is characterized by what is called rapid cycling where a person can go from one extreme to another in a matter of minutes and several times a day. I know because my son is Bipolar.