Support and Resistance

[jzfusion]

Is there anyway to determine support and resistance? i.e on the 5min chart sell when we crash through support etc?
I am really wondering why there are so many lagging indicators available but I'm not seeing a lot of things related to price action. Can someone point me in the right direction if I'm wrong.

[l'andorrà]

AFAIK the best approach is using the zigzag indicator as a way to identify supports and resistances. You can find those levels so:

In this example, I catch the last two highs (two resistances) into a variable. You can do it with lows also.