diff --git a/wise-webapp/src/main/java/com/wisemapping/filter/UserAgent.java b/wise-webapp/src/main/java/com/wisemapping/filter/UserAgent.java
index 30e58deb..91b2acf7 100644
--- a/wise-webapp/src/main/java/com/wisemapping/filter/UserAgent.java
+++ b/wise-webapp/src/main/java/com/wisemapping/filter/UserAgent.java
@@ -332,8 +332,7 @@ public class UserAgent implements Serializable {
         // Is it a supported browser ?.
         final UserAgent.Product product = this.getProduct();
         boolean result = product == UserAgent.Product.FIREFOX && ((this.isVersionGreatedOrEqualThan(1, 5) && this.getOs() != UserAgent.OS.MAC) || (this.isVersionGreatedOrEqualThan(3, 0) && this.getOs() == UserAgent.OS.MAC));
-
-        result = result || product == UserAgent.Product.EXPLORER && this.isVersionGreatedOrEqualThan(6, 0) && this.getOs() == UserAgent.OS.WINDOWS;
+        result = result || product == UserAgent.Product.EXPLORER && this.isVersionGreatedOrEqualThan(7, 0) && this.getOs() == UserAgent.OS.WINDOWS;
         result = result || product == UserAgent.Product.OPERA && this.isVersionGreatedOrEqualThan(9, 2);
         result = result || product == UserAgent.Product.CHROME && this.isVersionGreatedOrEqualThan(7, 0);
         result = result || product == UserAgent.Product.SAFARI && this.isVersionGreatedOrEqualThan(3, 0);
diff --git a/wise-webapp/src/main/webapp/css/bubble.css b/wise-webapp/src/main/webapp/css/bubble.css
index a43a988d..ecdf537c 100644
--- a/wise-webapp/src/main/webapp/css/bubble.css
+++ b/wise-webapp/src/main/webapp/css/bubble.css
@@ -218,14 +218,12 @@
     background: transparent url(../images/bubbleTip_bottom_pico_blue.png) top left;
     width: 58px;
     height: 62px;
-    behavior: url(../css/iepngfix.htc);
 }
 
 .bubbleTopHintBlue {
     background: transparent url(../images/bubbleTip_top_pico_blue.png) top left;
     width: 58px;
     height: 61px;
-    behavior: url(../css/iepngfix.htc);
 }
 
 .btn-primary {
diff --git a/wise-webapp/src/main/webapp/css/common.css b/wise-webapp/src/main/webapp/css/common.css
index f3f3b663..b4c83e1d 100644
--- a/wise-webapp/src/main/webapp/css/common.css
+++ b/wise-webapp/src/main/webapp/css/common.css
@@ -188,9 +188,7 @@ h4 {
     margin-top: 8px;
     height: 80px;
     width: 134px;
-    background-image: url("../images/logo-small.png");
-    behavior: url(../css/iepngfix.htc);
-    background-repeat: no-repeat;
+    background: url("../images/logo-small.png") no-repeat;
     position: absolute;
     top: 0;
     left: 0;
@@ -349,7 +347,6 @@ div#printLogo {
     float: right;
     margin: 1px;
     background: url(../images/logo-vsmall.png) no-repeat right top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 .btn-primary {
diff --git a/wise-webapp/src/main/webapp/css/editor.css b/wise-webapp/src/main/webapp/css/editor.css
index ffab7bbd..84a8555f 100644
--- a/wise-webapp/src/main/webapp/css/editor.css
+++ b/wise-webapp/src/main/webapp/css/editor.css
@@ -226,37 +226,30 @@ div#share {
 
 div#saveButton {
     background: url(../images/save.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 div#discardButton {
     background: url(../images/close.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 div#history {
     background: url(../images/history.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 div#print {
     background: url(../images/file_printer.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 div#undoEdition {
     background: url(../images/file_undo_dis.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 div#redoEdition {
     background: url(../images/file_redo_dis.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 #export {
     background: url(../images/file_export.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
     position:relative;
 }
 
@@ -270,91 +263,75 @@ div#redoEdition {
 
 div#zoomIn {
     background: url(../images/zoom_in.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 #zoomOut {
     background: url(../images/zoom_out.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 #addTopic {
     background: url(../images/topic_add.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 #deleteTopic {
     background: url(../images/topic_delete.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 div#topicColor {
     background: url(../images/topic_bgcolor.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
     z-index: 4;
 }
 
 div#topicIcon {
     background: url(../images/topic_icon.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
     z-index: 4;
 }
 
 div#topicNote {
     background: url(../images/note.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
     z-index: 4;
 }
 
 div#topicLink {
     background: url(../images/topic_link.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
     z-index: 4;
 }
 
 div#topicNote {
     background-image: url(../images/note.png);
-    behavior: url(../css/iepngfix.htc);
     z-index: 4;
 }
 
 #topicBorder {
     background: url(../images/topic_border.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
     width: 30px;
 }
 
 #fontFamily {
     background: url(../images/font_type.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 #topicShape {
     background: url(../images/topic_shape.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
     width: 30px;
 }
 
 #fontBold {
     background: url(../images/font_bold.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 #fontItalic {
     background: url(../images/font_italic.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 div#fontColor {
     background: url(../images/font_color.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
     z-index: 4;
 }
 
 #fontSize {
     float: left;
     background: url(../images/font_size.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 #font-size {
@@ -372,18 +349,14 @@ div#fontColor {
 
 #shareIt {
     background: url(../images/collab_share.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 #publishIt {
     background: url(../images/collab_publish.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
-
 }
 
 #tagIt {
     background: url(../images/collab_tag.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 #colorPalette {
@@ -486,7 +459,6 @@ div#actionsContainer {
     width: 6px;
     height: 25px;
     background: url(../images/btnStart2.png) no-repeat left top;
-    behavior: url(../css/iepngfix.htc);
     float: left;
 }
 
@@ -494,8 +466,7 @@ div#actionsContainer {
     background: url(../images/btnBody2.png);
     float: left;
     height: 18px;
-    padding: 0px 5px;
-    padding-top: 5px;
+    padding: 5px 5px 0;
     text-align: center;
     color: black;
 }
@@ -504,7 +475,6 @@ div#actionsContainer {
     width: 7px;
     height: 23px;
     background: url(../images/btnEnd2.png) no-repeat right top;
-    behavior: url(../css/iepngfix.htc);
     float: left;
 }
 
@@ -524,7 +494,6 @@ div#footerEditor {
     float: right;
     margin: 5px;
     background: url(../images/logo-vsmall.png) no-repeat right top;
-    behavior: url(../css/iepngfix.htc);
 }
 
 #footerEditor .msgLoggerContainer {
@@ -719,7 +688,7 @@ div#helpContainer {
 
 div#helpContent h1 {
     font-weight: bold;
-    color: whitesmoke;
+    color: #f5f5f5;
     font-size: 15px;
 }
 
@@ -755,14 +724,12 @@ div#small_error_icon {
 div#toolbar .topicRelation {
     width:56px;
     background: url(../images/topic_relationship.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
     z-index: 4;
 }
 
 div#toolbar .topicRelation:hover {
     width:56px;
     background: url(../images/topic_relationship.png) no-repeat center top;
-    behavior: url(../css/iepngfix.htc);
     z-index: 4;
 }
 
diff --git a/wise-webapp/src/main/webapp/css/embedded.css b/wise-webapp/src/main/webapp/css/embedded.css
index b1e6b92b..76915fd0 100644
--- a/wise-webapp/src/main/webapp/css/embedded.css
+++ b/wise-webapp/src/main/webapp/css/embedded.css
@@ -63,7 +63,7 @@ div#embFooter {
     height: 35px;
     width: 100%;
     bottom: 0;
-    left: 0px;
+    left: 0;
     border-top: 1px solid black;
     background: #E5E5E5;
 }
@@ -73,7 +73,6 @@ div#logo {
     width: 80px;
     position: absolute;
     background: url( ../images/logo-vvsmall.png ) no-repeat right top;
-    behavior: url( ../css/iepngfix.htc );
     right: 10px;
     top: -10px;
 }
@@ -96,14 +95,12 @@ div#logo {
 
 #zoomIn {
     background: url( ../images/zoom_in.png ) no-repeat left top;;
-    behavior: url( ../css/iepngfix.htc );
     margin-top: 10px;
     margin-left: 10px;
 }
 
 #zoomOut {
     background: url( ../images/zoom_out.png ) no-repeat left top;;
-    behavior: url( ../css/iepngfix.htc );
     margin-top: 10px
 }
 
diff --git a/wise-webapp/src/main/webapp/css/iepngfix.htc b/wise-webapp/src/main/webapp/css/iepngfix.htc
deleted file mode 100644
index 6d15f325..00000000
--- a/wise-webapp/src/main/webapp/css/iepngfix.htc
+++ /dev/null
@@ -1,68 +0,0 @@
-<public:component>
-<public:attach event="onpropertychange" onevent="doFix()" />
-
-<script type="text/javascript">
-
-// IE5.5+ PNG Alpha Fix v1.0RC4
-// (c) 2004-2005 Angus Turnbull http://www.twinhelix.com
-
-// This is licensed under the CC-GNU LGPL, version 2.1 or later.
-// For details, see: http://creativecommons.org/licenses/LGPL/2.1/
-
-
-// This must be a path to a blank image. That's all the configuration you need.
-if (typeof blankImg == 'undefined') var blankImg = 'blank.gif';
-
-
-var f = 'DXImageTransform.Microsoft.AlphaImageLoader';
-
-function filt(s, m)
-{
- if (filters[f])
- {
-  filters[f].enabled = s ? true : false;
-  if (s) with (filters[f]) { src = s; sizingMethod = m }
- }
- else if (s) style.filter = 'progid:'+f+'(src="'+s+'",sizingMethod="'+m+'")';
-}
-
-function doFix()
-{
- // Assume IE7 is OK.
- if (!/MSIE (5\.5|6\.)/.test(navigator.userAgent) ||
-  (event && !/(background|src)/.test(event.propertyName))) return;
-
- var bgImg = currentStyle.backgroundImage || style.backgroundImage;
-
- if (tagName == 'IMG')
- {
-  if ((/\.png$/i).test(src))
-  {
-   if (currentStyle.width == 'auto' && currentStyle.height == 'auto')
-    style.width = offsetWidth + 'px';
-   filt(src, 'scale');
-   src = blankImg;
-  }
-  else if (src.indexOf(blankImg) < 0) filt();
- }
- else if (bgImg && bgImg != 'none')
- {
-  if (bgImg.match(/^url[("']+(.*\.png)[)"']+$/i))
-  {
-   var s = RegExp.$1;
-   if (currentStyle.width == 'auto' && currentStyle.height == 'auto')
-    style.width = offsetWidth + 'px';
-   style.backgroundImage = 'none';
-   filt(s, 'crop');
-   // IE link fix.
-   for (var n = 0; n < childNodes.length; n++)
-    if (childNodes[n].style) childNodes[n].style.position = 'relative';
-  }
-  else filt();
- }
-}
-
-doFix();
-
-</script>
-</public:component>
\ No newline at end of file
diff --git a/wise-webapp/src/main/webapp/css/thirdparty.css b/wise-webapp/src/main/webapp/css/thirdparty.css
index 77171f92..55bf8488 100644
--- a/wise-webapp/src/main/webapp/css/thirdparty.css
+++ b/wise-webapp/src/main/webapp/css/thirdparty.css
@@ -291,7 +291,7 @@ div.windoo-wise a.windoo-maximize-disabled, div.windoo-wise a.windoo-maximize-di
 }
 
 div.windoo-wise a.windoo-minimize {
-    top: 0px;
+    top: 0;
     right: 56px;
     background-position: 0 0;
 }
@@ -308,7 +308,7 @@ div.windoo-wise a.windoo-minimize-disabled, div.windoo-wise a.windoo-minimize-di
 
 div.windoo-wise a.windoo-restore {
     display: none;
-    top: 0px;
+    top: 0;
     right: 15px;
     background-position: -46px 0;
 }
diff --git a/wise-webapp/src/main/webapp/css/wisehome.css b/wise-webapp/src/main/webapp/css/wisehome.css
index 7ec59d77..c3e17636 100644
--- a/wise-webapp/src/main/webapp/css/wisehome.css
+++ b/wise-webapp/src/main/webapp/css/wisehome.css
@@ -152,7 +152,6 @@
     background: url( ../images/search3.png ) no-repeat left;
     padding-left: 35px;
     padding-bottom: 10px;
-    behavior: url( ../css/iepngfix.htc );
 }
 
 #searchTitle {
@@ -189,7 +188,6 @@
     width: 6px;
     height: 25px;
     background: url( ../images/btnStart.png ) no-repeat left top;
-    behavior: url( ../css/iepngfix.htc );
     float: left;
 }
 
@@ -197,8 +195,7 @@
     background: url( ../images/btnBody.png );
     height: 18px;
     float: left;
-    padding: 0px 0px;
-    padding-top: 5px;
+    padding: 5px 0 0;
     text-align: center;
     color: black;
 }
@@ -207,7 +204,6 @@
     width: 7px;
     height: 25px;
     background: url( ../images/btnEnd.png ) no-repeat right top;
-    behavior: url( ../css/iepngfix.htc );
     float: left;
 }
 
@@ -228,7 +224,6 @@ div#tryNow .tryBtnStart {
     width: 10px;
     height: 70px;
     background: url( ../images/tryItStartBtn2.png ) no-repeat left top;
-    behavior: url( ../css/iepngfix.htc );
     float: left;
 }
 
@@ -247,7 +242,7 @@ div#tryNow .tryBtnEnd {
 }
 
 div#tryNow .tryBtnText {
-    padding: 0px 20px;
+    padding: 0 20px;
     position: relative;
     height: 70px;
     font-size: 20px;
@@ -288,7 +283,6 @@ div#video .videoBtnStart {
     width: 10px;
     height: 51px;
     background: url( ../images/videoStart.png ) no-repeat left top;
-    behavior: url( ../css/iepngfix.htc );
     float: left;
 }
 
@@ -379,7 +373,6 @@ div#signUpButton .signUpStartBtn {
     width: 5px;
     height: 25px;
     background: url( ../images/signUpStartBtn.png ) no-repeat left top;
-    behavior: url( ../css/iepngfix.htc );
     float: left;
 }
 
@@ -396,7 +389,6 @@ div#signUpButton .signUpEndBtn {
     width: 7px;
     height: 25px;
     background: url( ../images/signUpEndBtn.png ) no-repeat right top;
-    behavior: url( ../css/iepngfix.htc );
     float: left;
 }