Something like

Code:
for (var i:int = 0; i < some_array.size; i  = i + 1)
	{
		some_array(i).scale_me(up_input);
		for (var j:int = 0; j < some_array.size; j  = j + 1)
		{
			if (i =/ j)
			{
				if (some_array(i).hitTestObject(some_array[j]);)
				{
					some_array(j).scale_me(down_input)
				}
			}
		}
	}
Been awhile since I did this so that might be fairly brain dead.