Zaccheroni led AC Milan to the Serie A title in 1999 and has also coached Inter Milan, Lazio and Udinese in the top Italian league.

BBC: Liverpool boss Rafael Benitez plays down Juventus link

Some of the violence was especially fierce in Bergamo at the match between Atalanta and AC Milan which led to the game being suspended after seven minutes.

CNN: Insider's guide: Italian football violence

Current Blues boss Carlo Ancelotti led Inter's local rivals AC Milan with aplomb between 2001 and 2009 and this was the first time he has brought a side to the city since leaving for west London last summer.

BBC: Diego Milito

Several players have been targets of abuse from supporters in recent weeks, including American forward Jozy Altidore of the Dutch club AZ Alkmaar, Barcelona defender Daniel Alves and AC Milan midfielder Kevin-Prince Boateng, who led his teammates off the field during an exhibition game in protest.

WSJ: Henry: Deduct points from teams with abusive fans

Ideal for notebook users in shared or permanent work spaces, the Compaq L2311c sports a full HD, LED backlit LCD display panel and features HP Smart AC Technology that powers and charges HP notebook PCs while also detecting and regulating the capacity of the electrical current.

ENGADGET: HP redesigns its Magic Canvas software, plans to install it on all desktops (even non-touch ones)

The life cycle of the LED has also increased significantly, going beyond the life cycle of the (AC to DC) converter.

WSJ: Seoul Semiconductor's LED-Lighted Path

Since 2005, the company has stood out in the fast-moving LED industry with an innovation that allows LEDs to be powered by alternating current, or AC, rather than requiring a transformer that turns AC into direct current.

WSJ: Seoul Semiconductor's LED-Lighted Path