* Dollar, yen gain as investors take profits on risky assets
* Euro falls 0.1 pct vs dollar, 0.2 pct vs yen
* Aussie falls sharply after steep gains on Tuesday
* European shares rise, helping stem euro's losses
The dollar and the yen gained broadly while perceived higher risk currencies came under heavy selling pressure on Wednesday as riskier assets succumbed to profit-taking after a recent strong rally. >>