// check browser type
//isMSIE = /*@cc_on!@*/false; 
isMSIE='\v'=='v';
isMSIE7 = (isMSIE && typeof( document.body.style.maxHeight )!= "undefined");
isMEIE6 = (isMSIE && !isMSIE7);
/*@cc_on _d=document;eval('var document=_d')@*/
isFirefox=/a/[-1]=='a';
isFirefox2=(function x(){})[-6]=='x';
isFirefox3=(function x(){})[-5]=='x';
isSafari =/a/.__proto__=='//';
isOpera = (!! window.opera);
isWebkit = ( navigator.userAgent.indexOf( "WebKit" ) != -1 );