[css url parser issue #7] moved var declaration to top
[css url parser issue #7] moved var declaration to top

wangyi8412/yslow,codeviking/yslow,wangyi8412/yslow,arjunrn/yslow,arjunrn/yslow,simudream/yslow,marcelduran/yslow,simudream/yslow,aaron-goshine/yslow,aaron-goshine/yslow,codeviking/yslow