var css_selector = function() {var ua=navigator.userAgent.toLowerCase(),is=function(t){return ua.indexOf(t) != -1;},h=document.getElementsByTagName('html')[0],b=(!(/opera|webtv/i.test(ua))&&/msie\s(\d)/.test(ua))?('ie ie'+RegExp.$1):is('firefox/2')?'gecko ff2':is('firefox/3')?'gecko ff3':is('gecko/')?'gecko':is('opera/9')?'opera opera9':/opera\s(\d)/.test(ua)?'opera opera'+RegExp.$1:is('konqueror')?'konqueror':is('chrome')?'chrome webkit safari':is('applewebkit/')?'webkit safari':is('mozilla/')?'gecko':'',os=(is('x11')||is('linux'))?' linux':is('mac')?' mac':is('win')?' win':'';var c=b+os+' js'; h.className += h.className?' '+c:c;}();

/* CSS BROWSER SELECTOR (includes Chrome and FF3)

EXAMPLES OF USAGE FOR A CLASS CALLED 'example': 

.ie .example {
  background-color: yellow
}
.ie7 #content {
  background-color: orange
}
.ie6 .example {
  background-color: brown
}
.gecko .example {
  background-color: gray
}
.win.gecko .example {
  background-color: red
}
.linux.gecko .example {
  background-color: pink
}
.opera .example {
  background-color: green
}
.konqueror .example {
  background-color: blue
}
.webkit .example {
  background-color: black
}
.example {
  width: 100px;
  height: 100px;
}
.no_js { 
	display: block 
}
.has_js { 
	display: none 
}
.js .no_js { 
	display: none 
}
.js .has_js { 
	display: block 
}

*/