diff --git a/blockly_compressed.js b/blockly_compressed.js
index c42a4ca67..d1873f038 100644
--- a/blockly_compressed.js
+++ b/blockly_compressed.js
@@ -898,7 +898,7 @@ Blockly.Connection.prototype.bumpAwayFrom_=function(a){if(0==Blockly.dragMode_){
 Blockly.Connection.prototype.moveTo=function(a,b){this.inDB_&&this.dbList_[this.type].removeConnection_(this);this.x_=a;this.y_=b;this.hidden_||this.dbList_[this.type].addConnection_(this)};Blockly.Connection.prototype.moveBy=function(a,b){this.moveTo(this.x_+a,this.y_+b)};
 Blockly.Connection.prototype.highlight=function(){var a;this.type==Blockly.INPUT_VALUE||this.type==Blockly.OUTPUT_VALUE?(a=this.sourceBlock_.RTL?-Blockly.BlockSvg.TAB_WIDTH:Blockly.BlockSvg.TAB_WIDTH,a="m 0,0 v 5 c 0,10 "+-a+",-8 "+-a+",7.5 s "+a+",-2.5 "+a+",7.5 v 5"):a=this.sourceBlock_.RTL?"m 20,0 h -5 "+Blockly.BlockSvg.NOTCH_PATH_RIGHT+" h -5":"m -20,0 h 5 "+Blockly.BlockSvg.NOTCH_PATH_LEFT+" h 5";var b=this.sourceBlock_.getRelativeToSurfaceXY();Blockly.Connection.highlightedPath_=Blockly.createSvgElement("path",
 {"class":"blocklyHighlightedConnectionPath",d:a,transform:"translate("+(this.x_-b.x)+", "+(this.y_-b.y)+")"},this.sourceBlock_.getSvgRoot())};Blockly.Connection.prototype.unhighlight=function(){goog.dom.removeNode(Blockly.Connection.highlightedPath_);delete Blockly.Connection.highlightedPath_};
-Blockly.Connection.prototype.tighten_=function(){var a=Math.round(this.targetConnection.x_-this.x_),b=Math.round(this.targetConnection.y_-this.y_);if(0!=a||0!=b){var c=this.targetBlock(),d=c.getSvgRoot();if(!d)throw"block is not rendered.";d=Blockly.getRelativeXY_(d);c.getSvgRoot().setAttribute("transform","translate("+(d.x-a)+", "+(d.y-b)+")");c.moveConnections_(-a,-b)}};
+Blockly.Connection.prototype.tighten_=function(){var a=this.targetConnection.x_-this.x_,b=this.targetConnection.y_-this.y_;if(0!=a||0!=b){var c=this.targetBlock(),d=c.getSvgRoot();if(!d)throw"block is not rendered.";d=Blockly.getRelativeXY_(d);c.getSvgRoot().setAttribute("transform","translate("+(d.x-a)+", "+(d.y-b)+")");c.moveConnections_(-a,-b)}};
 Blockly.Connection.prototype.closest=function(a,b,c){function d(b){var c=e[b];if((c.type==Blockly.OUTPUT_VALUE||c.type==Blockly.PREVIOUS_STATEMENT)&&c.targetConnection||c.type==Blockly.INPUT_VALUE&&c.targetConnection&&!c.targetBlock().isMovable()||!p.checkType_(c))return!0;c=c.sourceBlock_;do{if(l==c)return!0;c=c.getParent()}while(c);var d=f-e[b].x_,c=g-e[b].y_,d=Math.sqrt(d*d+c*c);d<=a&&(k=e[b],a=d);return c<a}if(this.targetConnection)return{connection:null,radius:a};var e=this.dbList_[Blockly.OPPOSITE_TYPE[this.type]],
 f=this.x_+b,g=this.y_+c;b=0;for(var h=c=e.length-2;b<h;)e[h].y_<g?b=h:c=h,h=Math.floor((b+c)/2);c=b=h;var k=null,l=this.sourceBlock_,p=this;if(e.length){for(;0<=b&&d(b);)b--;do c++;while(c<e.length&&d(c))}return{connection:k,radius:a}};
 Blockly.Connection.prototype.checkType_=function(a){var b=this.targetBlock();if(b&&!b.isMovable()&&!this.sourceBlock_.isMovable()||(b=a.targetBlock())&&!b.isMovable()&&!a.sourceBlock_.isMovable())return!1;if(!this.check_||!a.check_)return!0;for(b=0;b<this.check_.length;b++)if(-1!=a.check_.indexOf(this.check_[b]))return!0;return!1};
@@ -1342,7 +1342,7 @@ Blockly.bindEvent_.TOUCH_MAP={};goog.events.BrowserFeature.TOUCH_ENABLED&&(Block
 Blockly.fireUiEventNow=function(a,b){var c=Blockly.fireUiEvent.DB_[b];if(c){var d=c.indexOf(a);-1!=d&&c.splice(d,1)}if(document.createEvent)c=document.createEvent("UIEvents"),c.initEvent(b,!0,!0),a.dispatchEvent(c);else if(document.createEventObject)c=document.createEventObject(),a.fireEvent("on"+b,c);else throw"FireEvent: No event creation mechanism.";};
 Blockly.fireUiEvent=function(a,b){var c=Blockly.fireUiEvent.DB_[b];if(c){if(-1!=c.indexOf(a))return;c.push(a)}else Blockly.fireUiEvent.DB_[b]=[a];setTimeout(function(){Blockly.fireUiEventNow(a,b)},0)};Blockly.fireUiEvent.DB_={};Blockly.noEvent=function(a){a.preventDefault();a.stopPropagation()};
 Blockly.isTargetInput_=function(a){return"textarea"==a.target.type||"text"==a.target.type||"number"==a.target.type||"email"==a.target.type||"password"==a.target.type||"search"==a.target.type||"tel"==a.target.type||"url"==a.target.type};
-Blockly.getRelativeXY_=function(a){var b={x:0,y:0},c=a.getAttribute("x");c&&(b.x=parseInt(c,10));if(c=a.getAttribute("y"))b.y=parseInt(c,10);if(a=(a=a.getAttribute("transform"))&&a.match(/translate\(\s*([-\d.]+)([ ,]\s*([-\d.]+)\s*\))?/))b.x+=parseInt(a[1],10),a[3]&&(b.y+=parseInt(a[3],10));return b};Blockly.getSvgXY_=function(a){var b=0,c=0;do{var d=Blockly.getRelativeXY_(a),b=b+d.x,c=c+d.y;a=a.parentNode}while(a&&"svg"!=a.nodeName.toLowerCase());return{x:b,y:c}};
+Blockly.getRelativeXY_=function(a){var b={x:0,y:0},c=a.getAttribute("x");c&&(b.x=parseInt(c,10));if(c=a.getAttribute("y"))b.y=parseInt(c,10);if(a=(a=a.getAttribute("transform"))&&a.match(/translate\(\s*([-\d.]+)([ ,]\s*([-\d.]+)\s*\))?/))b.x+=parseFloat(a[1]),a[3]&&(b.y+=parseFloat(a[3]));return b};Blockly.getSvgXY_=function(a){var b=0,c=0;do{var d=Blockly.getRelativeXY_(a),b=b+d.x,c=c+d.y;a=a.parentNode}while(a&&"svg"!=a.nodeName.toLowerCase());return{x:b,y:c}};
 Blockly.createSvgElement=function(a,b,c){a=document.createElementNS(Blockly.SVG_NS,a);for(var d in b)a.setAttribute(d,b[d]);document.body.runtimeStyle&&(a.runtimeStyle=a.currentStyle=a.style);c&&c.appendChild(a);return a};Blockly.isRightButton=function(a){return a.ctrlKey&&goog.userAgent.MAC?!0:2==a.button};Blockly.mouseToSvg=function(a,b){var c=b.createSVGPoint();c.x=a.clientX;c.y=a.clientY;var d=b.getScreenCTM(),d=d.inverse();return c.matrixTransform(d)};
 Blockly.shortestStringLength=function(a){if(!a.length)return 0;for(var b=a[0].length,c=1;c<a.length;c++)b=Math.min(b,a[c].length);return b};Blockly.commonWordPrefix=function(a,b){if(!a.length)return 0;if(1==a.length)return a[0].length;for(var c=0,d=b||Blockly.shortestStringLength(a),e=0;e<d;e++){for(var f=a[0][e],g=1;g<a.length;g++)if(f!=a[g][e])return c;" "==f&&(c=e+1)}for(g=1;g<a.length;g++)if((f=a[g][e])&&" "!=f)return c;return d};
 Blockly.commonWordSuffix=function(a,b){if(!a.length)return 0;if(1==a.length)return a[0].length;for(var c=0,d=b||Blockly.shortestStringLength(a),e=0;e<d;e++){for(var f=a[0].substr(-e-1,1),g=1;g<a.length;g++)if(f!=a[g].substr(-e-1,1))return c;" "==f&&(c=e+1)}for(g=1;g<a.length;g++)if((f=a[g].charAt(a[g].length-e-1))&&" "!=f)return c;return d};Blockly.isNumber=function(a){return!!a.match(/^\s*-?\d+(\.\d+)?\s*$/)};
diff --git a/core/connection.js b/core/connection.js
index e85ec08fa..13ce6472d 100644
--- a/core/connection.js
+++ b/core/connection.js
@@ -378,8 +378,8 @@ Blockly.Connection.prototype.unhighlight = function() {
  * @private
  */
 Blockly.Connection.prototype.tighten_ = function() {
-  var dx = Math.round(this.targetConnection.x_ - this.x_);
-  var dy = Math.round(this.targetConnection.y_ - this.y_);
+  var dx = this.targetConnection.x_ - this.x_;
+  var dy = this.targetConnection.y_ - this.y_;
   if (dx != 0 || dy != 0) {
     var block = this.targetBlock();
     var svgRoot = block.getSvgRoot();
diff --git a/core/utils.js b/core/utils.js
index 138eb29ca..8ba598070 100644
--- a/core/utils.js
+++ b/core/utils.js
@@ -271,9 +271,9 @@ Blockly.getRelativeXY_ = function(element) {
   var r = transform &&
           transform.match(/translate\(\s*([-\d.]+)([ ,]\s*([-\d.]+)\s*\))?/);
   if (r) {
-    xy.x += parseInt(r[1], 10);
+    xy.x += parseFloat(r[1]);
     if (r[3]) {
-      xy.y += parseInt(r[3], 10);
+      xy.y += parseFloat(r[3]);
     }
   }
   return xy;