BRATISLAVA, Sept 20 (Reuters) - The Slovak crown <EURSKK=> firmed slightly to the euro on Wednesday as central European currencies recovered from a drop caused by political turmoil and street riots in Hungary, traders said. The Slovak unit ended at 37.620 to the euro, after 37.460 at Tuesday's close. The Polish zloty and Czech crown also edged up thanks to easing worries of escalation of violence in Hungary. Wednesday's announcement of plans by Japan's Sony to build a new flat-screen television factory for 73 million euros in Slovakia also supported the crown. "The amount is not big enough to cause a jump, but it is still positive news and supportive (for the crown)," one foreign bank trader said. "Regional moves will remain the main factor for the crown while we are waiting for more news about the budget," he added. The government must approve the 2007 state budget draft by Oct. 15, which is the deadline for submitting it to parliament. Investors are awaiting spending details to see if the fiscal plan is consistent with the aim to adopt the euro in 2009. ----------------MARKET SNAPSHOT AT 1500 GMT------------------- Crown/Euro <EURSKK=> 37.420 vs 37.460 (+0.11 pct) on Tuesday Crown/Dollar <SKK=> 29.460 vs 29.492 (+0.13 pct) 5-yr govt bond <SK5YT=RR> yield 5.071/4.772 vs 5.049/4.769 9-yr govt bond <SK9YT=RR> yield 4.961/4.761 vs 4.960/4.760 -------------------------------------------------------------- ((Reporting by Peter Laca, editing by David Christian-Edwards; peter.laca@reuters.com; Reuters Messaging: peter.laca.reuters.com@reuters.net; +421-2 5341 8402)) Keywords: MARKETS SLOVAKIA CROWN CLOSE