diff --git a/static.go b/static.go
index 1f28511..147108c 100644
--- a/static.go
+++ b/static.go
@@ -61,22 +61,22 @@ func (fi bindata_file_info) Sys() interface{} {
 	return nil
 }
 
-var _static_addsub_html = []byte("\x1f\x8b\x08\x00\x00\x09\x6e\x88\x00\xff\x94\x52\xb1\x92\xd4\x30\x0c\xed\xef\x2b\x8c\x1b\x0a\xb8\xf5\x41\xc9\xd8\x69\x80\xa1\xba\x81\x82\x86\xd2\x6b\x2b\x44\x8b\x63\x07\x4b\xd9\x9d\xf0\xf5\x38\xce\xce\x24\x1b\x66\x67\xb8\x34\x89\xa4\xf7\xf4\xf4\x22\xe9\x57\x9f\xbe\x7e\xfc\xfe\xe3\xdb\x67\xd1\x71\x1f\x9a\x07\x3d\xbf\x44\xb0\xf1\xa7\x91\x10\x65\xf3\x20\xca\xa3\x3b\xb0\x7e\xf9\xac\x21\x23\x07\x68\x9e\x6d\xf6\x94\xe2\x6b\x12\xcf\x96\x3b\xf1\xc5\xf6\xa0\xd5\x52\x5a\xa1\x3d\xb0\x15\xb1\x94\x8c\x3c\x23\x5c\x86\x94\x59\x0a\x97\x22\x43\x64\x23\x2f\xe8\xb9\x33\x1e\xce\xe8\xe0\xb1\x06\x6f\x05\x46\x64\xb4\xe1\x91\x9c\x0d\x60\xde\x1d\x9e\xe4\xa6\x5d\xc0\xf8\x4b\x74\x19\x5a\x23\x55\x5f\x54\x0f\x8e\x48\x8a\x0c\xc1\x48\xe2\x29\x00\x75\x00\x45\xa0\x07\x8f\xb6\xa4\x5c\x86\xd5\x84\x5a\x5d\xe8\x63\xf2\xd3\xa6\x2d\x81\x63\x4c\x51\xa0\x37\xf2\x3a\xdc\x46\x75\x81\x0c\x36\x0a\x17\x2c\x91\x91\x71\xec\x8f\x90\x65\x85\xb7\x98\xa9\x80\x9f\xb4\x9a\x11\xff\x49\x4a\x03\x64\x3b\x2b\xca\xe6\xcd\x8b\x88\x65\xd0\x14\xfd\x3d\x39\x8f\xe7\xdb\x4c\xcd\x62\x1c\x46\xae\x6c\x1b\xe9\x32\x77\xe2\x69\x80\xb5\x2f\xe1\x9f\x12\xbd\x97\x7b\x3d\x3b\x72\x6a\x93\x1b\x49\xa8\x9d\x8e\xba\x11\x2a\xa3\x2c\xbf\x6f\x93\x6a\x53\x62\xc8\xb7\x34\x72\x29\xc3\x87\xab\xb7\x6a\x66\x4e\xc8\x66\x6f\x45\xab\x3d\x5b\x97\x45\xe2\xc0\x82\xb2\x2b\x7b\x3f\xfd\x1e\x21\x4f\x87\x13\x55\x6a\xad\xdc\x83\xd6\x13\xf9\x17\xa8\xd5\xb2\xff\x72\x12\xf5\xe8\xff\x06\x00\x00\xff\xff\x21\xc2\x35\xf8\x05\x03\x00\x00")
+var _static_addsub = []byte("\x1f\x8b\x08\x00\x00\x09\x6e\x88\x00\xff\x94\x52\xb1\x92\xd4\x30\x0c\xed\xef\x2b\x8c\x1b\x0a\xb8\xf5\x41\xc9\xd8\x69\x80\xa1\xba\x81\x82\x86\xd2\x6b\x2b\x44\x8b\x63\x07\x4b\xd9\x9d\xf0\xf5\x38\xce\xce\x24\x1b\x66\x67\xb8\x34\x89\xa4\xf7\xf4\xf4\x22\xe9\x57\x9f\xbe\x7e\xfc\xfe\xe3\xdb\x67\xd1\x71\x1f\x9a\x07\x3d\xbf\x44\xb0\xf1\xa7\x91\x10\x65\xf3\x20\xca\xa3\x3b\xb0\x7e\xf9\xac\x21\x23\x07\x68\x9e\x6d\xf6\x94\xe2\x6b\x12\xcf\x96\x3b\xf1\xc5\xf6\xa0\xd5\x52\x5a\xa1\x3d\xb0\x15\xb1\x94\x8c\x3c\x23\x5c\x86\x94\x59\x0a\x97\x22\x43\x64\x23\x2f\xe8\xb9\x33\x1e\xce\xe8\xe0\xb1\x06\x6f\x05\x46\x64\xb4\xe1\x91\x9c\x0d\x60\xde\x1d\x9e\xe4\xa6\x5d\xc0\xf8\x4b\x74\x19\x5a\x23\x55\x5f\x54\x0f\x8e\x48\x8a\x0c\xc1\x48\xe2\x29\x00\x75\x00\x45\xa0\x07\x8f\xb6\xa4\x5c\x86\xd5\x84\x5a\x5d\xe8\x63\xf2\xd3\xa6\x2d\x81\x63\x4c\x51\xa0\x37\xf2\x3a\xdc\x46\x75\x81\x0c\x36\x0a\x17\x2c\x91\x91\x71\xec\x8f\x90\x65\x85\xb7\x98\xa9\x80\x9f\xb4\x9a\x11\xff\x49\x4a\x03\x64\x3b\x2b\xca\xe6\xcd\x8b\x88\x65\xd0\x14\xfd\x3d\x39\x8f\xe7\xdb\x4c\xcd\x62\x1c\x46\xae\x6c\x1b\xe9\x32\x77\xe2\x69\x80\xb5\x2f\xe1\x9f\x12\xbd\x97\x7b\x3d\x3b\x72\x6a\x93\x1b\x49\xa8\x9d\x8e\xba\x11\x2a\xa3\x2c\xbf\x6f\x93\x6a\x53\x62\xc8\xb7\x34\x72\x29\xc3\x87\xab\xb7\x6a\x66\x4e\xc8\x66\x6f\x45\xab\x3d\x5b\x97\x45\xe2\xc0\x82\xb2\x2b\x7b\x3f\xfd\x1e\x21\x4f\x87\x13\x55\x6a\xad\xdc\x83\xd6\x13\xf9\x17\xa8\xd5\xb2\xff\x72\x12\xf5\xe8\xff\x06\x00\x00\xff\xff\x21\xc2\x35\xf8\x05\x03\x00\x00")
 
-func static_addsub_html_bytes() ([]byte, error) {
+func static_addsub_bytes() ([]byte, error) {
 	return bindata_read(
-		_static_addsub_html,
-		"static/addsub.html",
+		_static_addsub,
+		"static/addsub",
 	)
 }
 
-func static_addsub_html() (*asset, error) {
-	bytes, err := static_addsub_html_bytes()
+func static_addsub() (*asset, error) {
+	bytes, err := static_addsub_bytes()
 	if err != nil {
 		return nil, err
 	}
 
-	info := bindata_file_info{name: "static/addsub.html", size: 773, mode: os.FileMode(420), modTime: time.Unix(1421121307, 0)}
+	info := bindata_file_info{name: "static/addsub", size: 773, mode: os.FileMode(420), modTime: time.Unix(1421134381, 0)}
 	a := &asset{bytes: bytes, info:  info}
 	return a, nil
 }
@@ -96,7 +96,7 @@ func static_index_html() (*asset, error) {
 		return nil, err
 	}
 
-	info := bindata_file_info{name: "static/index.html", size: 632, mode: os.FileMode(420), modTime: time.Unix(1421121307, 0)}
+	info := bindata_file_info{name: "static/index.html", size: 632, mode: os.FileMode(420), modTime: time.Unix(1421134432, 0)}
 	a := &asset{bytes: bytes, info:  info}
 	return a, nil
 }
@@ -161,22 +161,22 @@ func static_math_js() (*asset, error) {
 	return a, nil
 }
 
-var _static_mul_html = []byte("\x1f\x8b\x08\x00\x00\x09\x6e\x88\x00\xff\x94\x52\xb1\x92\xd4\x30\x0c\xed\xef\x2b\x8c\x1b\x0a\xb8\xf5\x41\xc9\xd8\x69\x80\xa1\xba\x81\x82\x86\xd2\x6b\x2b\x44\x8b\x63\x07\x4b\xd9\x9d\xf0\xf5\x38\xce\xce\x24\x1b\x66\x67\xb8\x34\x89\xa4\xf7\xf4\xf4\x22\xe9\x57\x9f\xbe\x7e\xfc\xfe\xe3\xdb\x67\xd1\x71\x1f\x9a\x07\x3d\xbf\x44\xb0\xf1\xa7\x91\x10\x65\xf3\x20\xca\xa3\x3b\xb0\x7e\xf9\xac\x21\x23\x07\x68\x9e\x6d\xf6\x94\xe2\x6b\x12\xcf\x96\x3b\xf1\xc5\xf6\xa0\xd5\x52\x5a\xa1\x3d\xb0\x15\xb1\x94\x8c\x3c\x23\x5c\x86\x94\x59\x0a\x97\x22\x43\x64\x23\x2f\xe8\xb9\x33\x1e\xce\xe8\xe0\xb1\x06\x6f\x05\x46\x64\xb4\xe1\x91\x9c\x0d\x60\xde\x1d\x9e\xe4\xa6\x5d\xc0\xf8\x4b\x74\x19\x5a\x23\x55\x5f\x54\x0f\x8e\x48\x8a\x0c\xc1\x48\xe2\x29\x00\x75\x00\x45\xa0\x07\x8f\xb6\xa4\x5c\x86\xd5\x84\x5a\x5d\xe8\x63\xf2\xd3\xa6\x2d\x81\x63\x4c\x51\xa0\x37\xf2\x3a\xdc\x46\x75\x81\x0c\x36\x0a\x17\x2c\x91\x91\x71\xec\x8f\x90\x65\x85\xb7\x98\xa9\x80\x9f\xb4\x9a\x11\xff\x49\x4a\x03\x64\x3b\x2b\xca\xe6\xcd\x8b\x88\x65\xd0\x14\xfd\x3d\x39\x8f\xe7\xdb\x4c\xcd\x62\x1c\x46\xae\x6c\x1b\xe9\x32\x77\xe2\x69\x80\xb5\x2f\xe1\x9f\x12\xbd\x97\x7b\x3d\x3b\x72\x6a\x93\x1b\x49\xa8\x9d\x8e\xba\x11\x2a\xa3\x2c\xbf\x6f\x93\x6a\x53\x62\xc8\xb7\x34\x72\x29\xc3\x87\xab\xb7\x6a\x66\x4e\xc8\x66\x6f\x45\xab\x3d\x5b\x97\x45\xe2\xc0\x82\xb2\x2b\x7b\x3f\xfd\x1e\x21\x4f\x87\x13\x55\x6a\xad\xdc\x83\xd6\x13\xf9\x17\xa8\xd5\xb2\xff\x72\x12\xf5\xe8\xff\x06\x00\x00\xff\xff\x21\xc2\x35\xf8\x05\x03\x00\x00")
+var _static_mul = []byte("\x1f\x8b\x08\x00\x00\x09\x6e\x88\x00\xff\x94\x52\xb1\x92\xd4\x30\x0c\xed\xef\x2b\x8c\x1b\x0a\xb8\xf5\x41\xc9\xd8\x69\x80\xa1\xba\x81\x82\x86\xd2\x6b\x2b\x44\x8b\x63\x07\x4b\xd9\x9d\xf0\xf5\x38\xce\xce\x24\x1b\x66\x67\xb8\x34\x89\xa4\xf7\xf4\xf4\x22\xe9\x57\x9f\xbe\x7e\xfc\xfe\xe3\xdb\x67\xd1\x71\x1f\x9a\x07\x3d\xbf\x44\xb0\xf1\xa7\x91\x10\x65\xf3\x20\xca\xa3\x3b\xb0\x7e\xf9\xac\x21\x23\x07\x68\x9e\x6d\xf6\x94\xe2\x6b\x12\xcf\x96\x3b\xf1\xc5\xf6\xa0\xd5\x52\x5a\xa1\x3d\xb0\x15\xb1\x94\x8c\x3c\x23\x5c\x86\x94\x59\x0a\x97\x22\x43\x64\x23\x2f\xe8\xb9\x33\x1e\xce\xe8\xe0\xb1\x06\x6f\x05\x46\x64\xb4\xe1\x91\x9c\x0d\x60\xde\x1d\x9e\xe4\xa6\x5d\xc0\xf8\x4b\x74\x19\x5a\x23\x55\x5f\x54\x0f\x8e\x48\x8a\x0c\xc1\x48\xe2\x29\x00\x75\x00\x45\xa0\x07\x8f\xb6\xa4\x5c\x86\xd5\x84\x5a\x5d\xe8\x63\xf2\xd3\xa6\x2d\x81\x63\x4c\x51\xa0\x37\xf2\x3a\xdc\x46\x75\x81\x0c\x36\x0a\x17\x2c\x91\x91\x71\xec\x8f\x90\x65\x85\xb7\x98\xa9\x80\x9f\xb4\x9a\x11\xff\x49\x4a\x03\x64\x3b\x2b\xca\xe6\xcd\x8b\x88\x65\xd0\x14\xfd\x3d\x39\x8f\xe7\xdb\x4c\xcd\x62\x1c\x46\xae\x6c\x1b\xe9\x32\x77\xe2\x69\x80\xb5\x2f\xe1\x9f\x12\xbd\x97\x7b\x3d\x3b\x72\x6a\x93\x1b\x49\xa8\x9d\x8e\xba\x11\x2a\xa3\x2c\xbf\x6f\x93\x6a\x53\x62\xc8\xb7\x34\x72\x29\xc3\x87\xab\xb7\x6a\x66\x4e\xc8\x66\x6f\x45\xab\x3d\x5b\x97\x45\xe2\xc0\x82\xb2\x2b\x7b\x3f\xfd\x1e\x21\x4f\x87\x13\x55\x6a\xad\xdc\x83\xd6\x13\xf9\x17\xa8\xd5\xb2\xff\x72\x12\xf5\xe8\xff\x06\x00\x00\xff\xff\x21\xc2\x35\xf8\x05\x03\x00\x00")
 
-func static_mul_html_bytes() ([]byte, error) {
+func static_mul_bytes() ([]byte, error) {
 	return bindata_read(
-		_static_mul_html,
-		"static/mul.html",
+		_static_mul,
+		"static/mul",
 	)
 }
 
-func static_mul_html() (*asset, error) {
-	bytes, err := static_mul_html_bytes()
+func static_mul() (*asset, error) {
+	bytes, err := static_mul_bytes()
 	if err != nil {
 		return nil, err
 	}
 
-	info := bindata_file_info{name: "static/mul.html", size: 773, mode: os.FileMode(420), modTime: time.Unix(1421121307, 0)}
+	info := bindata_file_info{name: "static/mul", size: 773, mode: os.FileMode(420), modTime: time.Unix(1421134422, 0)}
 	a := &asset{bytes: bytes, info:  info}
 	return a, nil
 }
@@ -222,12 +222,12 @@ func AssetNames() []string {
 
 // _bindata is a table, holding each asset generator, mapped to its name.
 var _bindata = map[string]func() (*asset, error){
-	"static/addsub.html": static_addsub_html,
+	"static/addsub": static_addsub,
 	"static/index.html": static_index_html,
 	"static/jquery.js": static_jquery_js,
 	"static/math.css": static_math_css,
 	"static/math.js": static_math_js,
-	"static/mul.html": static_mul_html,
+	"static/mul": static_mul,
 }
 
 // AssetDir returns the file names below a certain
@@ -271,7 +271,7 @@ type _bintree_t struct {
 }
 var _bintree = &_bintree_t{nil, map[string]*_bintree_t{
 	"static": &_bintree_t{nil, map[string]*_bintree_t{
-		"addsub.html": &_bintree_t{static_addsub_html, map[string]*_bintree_t{
+		"addsub": &_bintree_t{static_addsub, map[string]*_bintree_t{
 		}},
 		"index.html": &_bintree_t{static_index_html, map[string]*_bintree_t{
 		}},
@@ -281,7 +281,7 @@ var _bintree = &_bintree_t{nil, map[string]*_bintree_t{
 		}},
 		"math.js": &_bintree_t{static_math_js, map[string]*_bintree_t{
 		}},
-		"mul.html": &_bintree_t{static_mul_html, map[string]*_bintree_t{
+		"mul": &_bintree_t{static_mul, map[string]*_bintree_t{
 		}},
 	}},
 }}
diff --git a/static/addsub.html b/static/addsub
similarity index 100%
rename from static/addsub.html
rename to static/addsub
diff --git a/static/mul.html b/static/mul
similarity index 100%
rename from static/mul.html
rename to static/mul