diff --git a/bin/installDeps.sh b/bin/installDeps.sh
index 8580387d..ab976a66 100755
--- a/bin/installDeps.sh
+++ b/bin/installDeps.sh
@@ -67,6 +67,21 @@ if [ $DOWNLOAD_JQUERY = "true" ]; then
   curl -lo static/js/jquery.js http://code.jquery.com/jquery-$NEEDED_VERSION.js || exit 1
 fi
 
+echo "Ensure prefixfree is downloaded and up to date..."
+DOWNLOAD_PREFIXFREE="true"
+NEEDED_VERSION="1.0.4"
+if [ -f "static/js/prefixfree.js" ]; then
+  VERSION=$(cat static/js/prefixfree.js | grep "PrefixFree" | grep -o "[0-9].[0-9].[0-9]");
+  
+  if [ ${VERSION#v} = $NEEDED_VERSION ]; then
+    DOWNLOAD_PREFIXFREE="false"
+  fi
+fi
+
+if [ $DOWNLOAD_PREFIXFREE = "true" ]; then
+  curl -lo static/js/prefixfree.js https://raw.github.com/LeaVerou/prefixfree/master/prefixfree.min.js || exit 1
+fi
+
 #Remove all minified data to force node creating it new
 echo "Clear minfified cache..."
 rm -f var/minified*
diff --git a/static/js/prefixfree.js b/static/js/prefixfree.js
deleted file mode 100644
index 1b0d5246..00000000
--- a/static/js/prefixfree.js
+++ /dev/null
@@ -1,419 +0,0 @@
-/**
- * StyleFix 1.0.1
- * @author Lea Verou
- * MIT license
- */
-
-(function(){
-
-if(!window.addEventListener) {
-	return;
-}
-
-var self = window.StyleFix = {
-	link: function(link) {
-		try {
-			// Ignore stylesheets with data-noprefix attribute as well as alternate stylesheets
-			if(link.rel !== 'stylesheet' || !link.sheet.cssRules || link.hasAttribute('data-noprefix')) {
-				return;
-			}
-		}
-		catch(e) {
-			return;
-		}
-
-		var url = link.href || link.getAttribute('data-href'),
-		    base = url.replace(/[^\/]+$/, ''),
-		    parent = link.parentNode,
-		    xhr = new XMLHttpRequest();
-		
-		xhr.open('GET', url);
-
-		xhr.onreadystatechange = function() {
-			if(xhr.readyState === 4) {
-				var css = xhr.responseText;
-				
-				if(css && link.parentNode) {
-					css = self.fix(css, true, link);
-					
-					// Convert relative URLs to absolute, if needed
-					if(base) {
-						css = css.replace(/url\((?:'|")?(.+?)(?:'|")?\)/gi, function($0, url) {
-							if(!/^([a-z]{3,10}:|\/|#)/i.test(url)) { // If url not absolute & not a hash
-								// May contain sequences like /../ and /./ but those DO work
-								return 'url("' + base + url + '")';
-							}
-							
-							return $0;						
-						});
-						
-						// behavior URLs shoudn’t be converted (Issue #19)
-						css = css.replace(RegExp('\\b(behavior:\\s*?url\\(\'?"?)' + base, 'gi'), '$1');
-					}
-					
-					var style = document.createElement('style');
-					style.textContent = css;
-					style.media = link.media;
-					style.disabled = link.disabled;
-					style.setAttribute('data-href', link.getAttribute('href'));
-					
-					parent.insertBefore(style, link);
-					parent.removeChild(link);
-				}
-			}
-		};
-		
-		xhr.send(null);
-		
-		link.setAttribute('data-inprogress', '');
-	},
-
-	styleElement: function(style) {
-		var disabled = style.disabled;
-		
-		style.textContent = self.fix(style.textContent, true, style);
-		
-		style.disabled = disabled;
-	},
-
-	styleAttribute: function(element) {
-		var css = element.getAttribute('style');
-		
-		css = self.fix(css, false, element);
-		
-		element.setAttribute('style', css);
-	},
-	
-	process: function() {
-		// Linked stylesheets
-		$('link[rel="stylesheet"]:not([data-inprogress])').forEach(StyleFix.link);
-		
-		// Inline stylesheets
-		$('style').forEach(StyleFix.styleElement);
-		
-		// Inline styles
-		$('[style]').forEach(StyleFix.styleAttribute);
-	},
-	
-	register: function(fixer, index) {
-		(self.fixers = self.fixers || [])
-			.splice(index === undefined? self.fixers.length : index, 0, fixer);
-	},
-	
-	fix: function(css, raw) {
-		for(var i=0; i<self.fixers.length; i++) {
-			css = self.fixers[i](css, raw) || css;
-		}
-		
-		return css;
-	},
-	
-	camelCase: function(str) {
-		return str.replace(/-([a-z])/g, function($0, $1) { return $1.toUpperCase(); }).replace('-','');
-	},
-	
-	deCamelCase: function(str) {
-		return str.replace(/[A-Z]/g, function($0) { return '-' + $0.toLowerCase() });
-	}
-};
-
-/**************************************
- * Process styles
- **************************************/
-(function(){
-	setTimeout(function(){
-		$('link[rel="stylesheet"]').forEach(StyleFix.link);
-	}, 10);
-	
-	document.addEventListener('DOMContentLoaded', StyleFix.process, false);
-})();
-
-function $(expr, con) {
-	return [].slice.call((con || document).querySelectorAll(expr));
-}
-
-})();
-
-/**
- * PrefixFree 1.0.4
- * @author Lea Verou
- * MIT license
- */
-(function(root, undefined){
-
-if(!window.StyleFix || !window.getComputedStyle) {
-	return;
-}
-
-var self = window.PrefixFree = {
-	prefixCSS: function(css, raw) {
-		var prefix = self.prefix;
-		
-		function fix(what, before, after, replacement) {
-			what = self[what];
-			
-			if(what.length) {
-				var regex = RegExp(before + '(' + what.join('|') + ')' + after, 'gi');
-
-				css = css.replace(regex, replacement);
-			}
-		}
-		
-		fix('functions', '(\\s|:|,)', '\\s*\\(', '$1' + prefix + '$2(');
-		fix('keywords', '(\\s|:)', '(\\s|;|\\}|$)', '$1' + prefix + '$2$3');
-		fix('properties', '(^|\\{|\\s|;)', '\\s*:', '$1' + prefix + '$2:');
-		
-		// Prefix properties *inside* values (issue #8)
-		if (self.properties.length) {
-			var regex = RegExp('\\b(' + self.properties.join('|') + ')(?!:)', 'gi');
-			
-			fix('valueProperties', '\\b', ':(.+?);', function($0) {
-				return $0.replace(regex, prefix + "$1")
-			});
-		}
-		
-		if(raw) {
-			fix('selectors', '', '\\b', self.prefixSelector);
-			fix('atrules', '@', '\\b', '@' + prefix + '$1');
-		}
-		
-		// Fix double prefixing
-		css = css.replace(RegExp('-' + prefix, 'g'), '-');
-		
-		return css;
-	},
-	
-	// Warning: prefixXXX functions prefix no matter what, even if the XXX is supported prefix-less
-	prefixSelector: function(selector) {
-		return selector.replace(/^:{1,2}/, function($0) { return $0 + self.prefix })
-	},
-	
-	prefixProperty: function(property, camelCase) {
-		var prefixed = self.prefix + property;
-		
-		return camelCase? StyleFix.camelCase(prefixed) : prefixed;
-	}
-};
-
-/**************************************
- * Properties
- **************************************/
-(function() {
-	var prefixes = {},
-		properties = [],
-		shorthands = {},
-		style = getComputedStyle(document.documentElement, null),
-		dummy = document.createElement('div').style;
-	
-	// Why are we doing this instead of iterating over properties in a .style object? Cause Webkit won't iterate over those.
-	var iterate = function(property) {
-		if(property.charAt(0) === '-') {
-			properties.push(property);
-			
-			var parts = property.split('-'),
-				prefix = parts[1];
-				
-			// Count prefix uses
-			prefixes[prefix] = ++prefixes[prefix] || 1;
-			
-			// This helps determining shorthands
-			while(parts.length > 3) {
-				parts.pop();
-				
-				var shorthand = parts.join('-');
-
-				if(supported(shorthand) && properties.indexOf(shorthand) === -1) {
-					properties.push(shorthand);
-				}
-			}
-		}
-	},
-	supported = function(property) {
-		return StyleFix.camelCase(property) in dummy;
-	}
-	
-	// Some browsers have numerical indices for the properties, some don't
-	if(style.length > 0) {
-		for(var i=0; i<style.length; i++) {
-			iterate(style[i])
-		}
-	}
-	else {
-		for(var property in style) {
-			iterate(StyleFix.deCamelCase(property));
-		}
-	}
-
-	// Find most frequently used prefix
-	var highest = {uses:0};
-	for(var prefix in prefixes) {
-		var uses = prefixes[prefix];
-
-		if(highest.uses < uses) {
-			highest = {prefix: prefix, uses: uses};
-		}
-	}
-	
-	self.prefix = '-' + highest.prefix + '-';
-	self.Prefix = StyleFix.camelCase(self.prefix);
-	
-	self.properties = [];
-
-	// Get properties ONLY supported with a prefix
-	for(var i=0; i<properties.length; i++) {
-		var property = properties[i];
-		
-		if(property.indexOf(self.prefix) === 0) { // we might have multiple prefixes, like Opera
-			var unprefixed = property.slice(self.prefix.length);
-			
-			if(!supported(unprefixed)) {
-				self.properties.push(unprefixed);
-			}
-		}
-	}
-	
-	// IE fix
-	if(self.Prefix == 'Ms' 
-	  && !('transform' in dummy) 
-	  && !('MsTransform' in dummy) 
-	  && ('msTransform' in dummy)) {
-		self.properties.push('transform', 'transform-origin');	
-	}
-	
-	self.properties.sort();
-})();
-
-/**************************************
- * Values
- **************************************/
-(function() {
-// Values that might need prefixing
-var functions = {
-	'linear-gradient': {
-		property: 'backgroundImage',
-		params: 'red, teal'
-	},
-	'calc': {
-		property: 'width',
-		params: '1px + 5%'
-	},
-	'element': {
-		property: 'backgroundImage',
-		params: '#foo'
-	}
-};
-
-
-functions['repeating-linear-gradient'] =
-functions['repeating-radial-gradient'] =
-functions['radial-gradient'] =
-functions['linear-gradient'];
-
-var keywords = {
-	'initial': 'color',
-	'zoom-in': 'cursor',
-	'zoom-out': 'cursor',
-	'box': 'display',
-	'flexbox': 'display',
-	'inline-flexbox': 'display'
-};
-
-self.functions = [];
-self.keywords = [];
-
-var style = document.createElement('div').style;
-
-function supported(value, property) {
-	style[property] = '';
-	style[property] = value;
-
-	return !!style[property];
-}
-
-for (var func in functions) {
-	var test = functions[func],
-		property = test.property,
-		value = func + '(' + test.params + ')';
-	
-	if (!supported(value, property)
-	  && supported(self.prefix + value, property)) {
-		// It's supported, but with a prefix
-		self.functions.push(func);
-	}
-}
-
-for (var keyword in keywords) {
-	var property = keywords[keyword];
-
-	if (!supported(keyword, property)
-	  && supported(self.prefix + keyword, property)) {
-		// It's supported, but with a prefix
-		self.keywords.push(keyword);
-	}
-}
-
-})();
-
-/**************************************
- * Selectors and @-rules
- **************************************/
-(function() {
-
-var 
-selectors = {
-	':read-only': null,
-	':read-write': null,
-	':any-link': null,
-	'::selection': null
-},
-
-atrules = {
-	'keyframes': 'name',
-	'viewport': null,
-	'document': 'regexp(".")'
-};
-
-self.selectors = [];
-self.atrules = [];
-
-var style = root.appendChild(document.createElement('style'));
-
-function supported(selector) {
-	style.textContent = selector + '{}';  // Safari 4 has issues with style.innerHTML
-	
-	return !!style.sheet.cssRules.length;
-}
-
-for(var selector in selectors) {
-	var test = selector + (selectors[selector]? '(' + selectors[selector] + ')' : '');
-		
-	if(!supported(test) && supported(self.prefixSelector(test))) {
-		self.selectors.push(selector);
-	}
-}
-
-for(var atrule in atrules) {
-	var test = atrule + ' ' + (atrules[atrule] || '');
-	
-	if(!supported('@' + test) && supported('@' + self.prefix + test)) {
-		self.atrules.push(atrule);
-	}
-}
-
-root.removeChild(style);
-
-})();
-
-// Properties that accept properties as their value
-self.valueProperties = [
-	'transition',
-	'transition-property'
-]
-
-// Add class for current prefix
-root.className += ' ' + self.prefix;
-
-StyleFix.register(self.prefixCSS);
-
-
-})(document.documentElement);