Are you saying Opera shuts down and you have to enter the web address again or are you trying to find a shortcut? I find that hitting the 'red' (hang up) key brings me to the home screen and when I select Opera again, I'm able to get back to web page I was previously on. I find this to be faster then a shortcut to the home screen.
the first way to get to the homescreen without exiting the running programs is to press the red hang-up button - as already stated above - the second is to press "Alt"+"Back" (the arrow) which brings you to the applications switcher, select the homescreen-icon (the house) and to switch back you press those buttons again and look for the opera icon.
thank you. phone specific. i cant seem to find any for the 7520.
as for opera. the 7520 does not have a red hang up key. the esc button is the hang up key. so alt del. it is thanks guy. sorry for the newbness