diff --git a/API.md b/API.md
index 89379d2..deb3e93 100644
--- a/API.md
+++ b/API.md
@@ -13,6 +13,16 @@ mask.setConfig({
     }
 });
 ```
+**Easy Way - without setConfig**
+```js
+var mask = new ax5.ui.mask({
+   zIndex: 1000, 
+   content: 'Loading content',
+   onStateChanged: function(){
+       console.log(this);
+   }
+});
+```
 ```json
 {
     [target: {Element} - target of mask,]
diff --git a/bower.json b/bower.json
index 77b7fe6..49c0e41 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
 	"name": "bootstrap-ax5mask",
-	"version": "0.4.0",
+	"version": "0.5.0",
 	"authors": [
 		"ThomasJ <tom@axisj.com>"
 	],
diff --git a/dist/ax5mask.js b/dist/ax5mask.js
index 78d2aca..44019cb 100644
--- a/dist/ax5mask.js
+++ b/dist/ax5mask.js
@@ -16,19 +16,19 @@
     var U = ax5.util;
 
     var axClass = function () {
-        var self = this;
-
-        // 클래스 생성자
-        this.main = (function () {
-            if (_SUPER_) _SUPER_.call(this); // 부모호출
-            this.config = {
-                theme: '',
-                target: jQuery(document.body).get(0)
-            };
-            this.maskContent = '';
-            this.status = "off";
+        var
+            self = this
+            ;
+
+        if (_SUPER_) _SUPER_.call(this); // 부모호출
+        this.maskContent = '';
+        this.status = "off";
+        this.config = {
+            theme: '',
+            target: jQuery(document.body).get(0)
+        };
+        var cfg = this.config;
 
-        }).apply(this, arguments);
 
         /**
          * Preferences of Mask UI
@@ -44,9 +44,6 @@
 		 * }
          * ```
          */
-            //== class body start
-        var cfg = this.config;
-
         this.init = function () {
             // after setConfig();
             if (this.config.content) this.setBody(this.config.content);
@@ -158,6 +155,14 @@
             return this;
         };
         //== class body end
+
+
+        // 클래스 생성자
+        this.main = (function () {
+            if(arguments && U.isObject(arguments[0])) {
+                this.setConfig(arguments[0]);
+            }
+        }).apply(this, arguments);
     };
 
     //== ui class 공통 처리 구문
diff --git a/dist/ax5mask.min.js b/dist/ax5mask.min.js
index 76f2e97..29fe829 100644
--- a/dist/ax5mask.min.js
+++ b/dist/ax5mask.min.js
@@ -1 +1 @@
-!function(t,s){var n=ax5.util,i=function(){var t=this;this.main=function(){s&&s.call(this),this.config={theme:"",target:jQuery(document.body).get(0)},this.maskContent="",this.status="off"}.apply(this,arguments);this.config;this.init=function(){this.config.content&&this.setBody(this.config.content)},this.setBody=function(t){this.maskContent=t},this.getBody=function(){return this.maskContent},this.open=function(s){"on"===this.status&&this.close(),s&&s.content&&this.setBody(s.content),t.maskConfig={},jQuery.extend(!0,t.maskConfig,this.config),jQuery.extend(!0,t.maskConfig,s);var n,i,s=t.maskConfig,e=s.target,o=jQuery(e),a=[],h="ax-mask-"+ax5.getGuid(),n={},u={};return a.push('<div class="ax-mask '+s.theme+'" id="'+h+'">'),a.push('<div class="ax-mask-bg"></div>'),a.push('<div class="ax-mask-content">'),a.push('<div class="ax-mask-body">'),a.push(t.getBody()),a.push("</div>"),a.push("</div>"),a.push("</div>"),jQuery(document.body).append(a.join("")),e!==document.body&&(n={position:"absolute",left:o.offset().left,top:o.offset().top,width:o.outerWidth(),height:o.outerHeight()},"undefined"!=typeof t.maskConfig.zIndex&&(n["z-index"]=t.maskConfig.zIndex),o.addClass("ax-masking")),this.$mask=i=jQuery("#"+h),this.$target=o,this.status="on",i.css(n),s.onStateChanged&&(u={state:"open"},s.onStateChanged.call(u,u)),this},this.close=function(){var t,s=this.maskConfig;return this.$mask.remove(),this.$target.removeClass("ax-masking"),s&&s.onStateChanged&&(t={state:"close"},s.onStateChanged.call(t,t)),this}};n.isFunction(s)&&(i.prototype=new s),t.mask=i}(ax5.ui,ax5.ui.root);
\ No newline at end of file
+!function(t,s){var n=ax5.util,e=function(){var t=this;s&&s.call(this),this.maskContent="",this.status="off",this.config={theme:"",target:jQuery(document.body).get(0)};this.config;this.init=function(){this.config.content&&this.setBody(this.config.content)},this.setBody=function(t){this.maskContent=t},this.getBody=function(){return this.maskContent},this.open=function(s){"on"===this.status&&this.close(),s&&s.content&&this.setBody(s.content),t.maskConfig={},jQuery.extend(!0,t.maskConfig,this.config),jQuery.extend(!0,t.maskConfig,s);var n,e,s=t.maskConfig,i=s.target,o=jQuery(i),a=[],h="ax-mask-"+ax5.getGuid(),n={},u={};return a.push('<div class="ax-mask '+s.theme+'" id="'+h+'">'),a.push('<div class="ax-mask-bg"></div>'),a.push('<div class="ax-mask-content">'),a.push('<div class="ax-mask-body">'),a.push(t.getBody()),a.push("</div>"),a.push("</div>"),a.push("</div>"),jQuery(document.body).append(a.join("")),i!==document.body&&(n={position:"absolute",left:o.offset().left,top:o.offset().top,width:o.outerWidth(),height:o.outerHeight()},"undefined"!=typeof t.maskConfig.zIndex&&(n["z-index"]=t.maskConfig.zIndex),o.addClass("ax-masking")),this.$mask=e=jQuery("#"+h),this.$target=o,this.status="on",e.css(n),s.onStateChanged&&(u={state:"open"},s.onStateChanged.call(u,u)),this},this.close=function(){var t,s=this.maskConfig;return this.$mask.remove(),this.$target.removeClass("ax-masking"),s&&s.onStateChanged&&(t={state:"close"},s.onStateChanged.call(t,t)),this},this.main=function(){arguments&&n.isObject(arguments[0])&&this.setConfig(arguments[0])}.apply(this,arguments)};n.isFunction(s)&&(e.prototype=new s),t.mask=e}(ax5.ui,ax5.ui.root);
\ No newline at end of file
diff --git a/package.json b/package.json
index b1f328b..176c2dc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "bootstrap-ax5mask",
-	"version": "0.4.0",
+	"version": "0.5.0",
 	"description": "A mask plugin that works with Bootstrap & jQuery",
 	"license": "MIT",
 	"repository": {
diff --git a/src/ax5mask.js b/src/ax5mask.js
index 78d2aca..44019cb 100644
--- a/src/ax5mask.js
+++ b/src/ax5mask.js
@@ -16,19 +16,19 @@
     var U = ax5.util;
 
     var axClass = function () {
-        var self = this;
-
-        // 클래스 생성자
-        this.main = (function () {
-            if (_SUPER_) _SUPER_.call(this); // 부모호출
-            this.config = {
-                theme: '',
-                target: jQuery(document.body).get(0)
-            };
-            this.maskContent = '';
-            this.status = "off";
+        var
+            self = this
+            ;
+
+        if (_SUPER_) _SUPER_.call(this); // 부모호출
+        this.maskContent = '';
+        this.status = "off";
+        this.config = {
+            theme: '',
+            target: jQuery(document.body).get(0)
+        };
+        var cfg = this.config;
 
-        }).apply(this, arguments);
 
         /**
          * Preferences of Mask UI
@@ -44,9 +44,6 @@
 		 * }
          * ```
          */
-            //== class body start
-        var cfg = this.config;
-
         this.init = function () {
             // after setConfig();
             if (this.config.content) this.setBody(this.config.content);
@@ -158,6 +155,14 @@
             return this;
         };
         //== class body end
+
+
+        // 클래스 생성자
+        this.main = (function () {
+            if(arguments && U.isObject(arguments[0])) {
+                this.setConfig(arguments[0]);
+            }
+        }).apply(this, arguments);
     };
 
     //== ui class 공통 처리 구문