Bug 202892 [SVG]Error pops up when click value series if set interactivity Blur/InvokeScript [13]
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/EventHandlers.java
.append( "		\n" ) 
			.append( "	TM.getText = function TM_getText(elem){\n" ) 
			.append( "	   var childs = elem ? elem.childNodes : null;\n" ) 
			.append( "	   for (var x = 0;  childs && x < childs.length; x++)\n" ) 
			.append( "	      if (childs.item(x).nodeType == 3)\n" ) 
			.append( "		  return childs.item(x).nodeValue;\n" ) 
			.append( "	   return \"\";\n" ) 
			.append( "	}\n" ) 
			.append( "	        function toggleLabelsVisibility(evt, id, compList, labelList){\n" ) 
		.append( "       var mainSvg = evt.target.ownerDocument;\n" ) 
		.append( "    for (i = 0; i < compList.length; i=i+1){\n" ) 
			.append( "         var comp = mainSvg.getElementById(id+'_'+compList[i]);\n" ) 
			.append( "         if ( comp == null ) continue;\n")		
			.append( "         var styleStr = comp.getAttribute(\"style\");\n" ) 
			.append( "        rVisibleExp=/visibility:[ ]*visible/g;\n" ) 
			.append( "        rInheritExp=/visibility:[ ]*inherit/g;\n" ) 
			.append( "        rHiddenExp=/visibility:[ ]*hidden/g;\n" ) 
			.append( "        results = styleStr.search(rVisibleExp);\n" ) 
			.append( "        inResults = styleStr.search(rInheritExp);\n" ) 
			.append( "        if ((results == -1) && (inResults == -1)){\n" ) 
 			.append( "           results = styleStr.search(rHiddenExp);\n" ) 
			.append( "            if (results == -1)\n" ) 
			.append( "                styleStr = styleStr + \"visibility:hidden;\";\n" ) 
    			.append( "            else\n" ) 
			.append( "                styleStr = styleStr.replace(rHiddenExp,\"visibility:visible\");\n" ) 
    			.append( "         }\n" ) 
			.append( "         else{\n" ) 
			.append( "         if (inResults == -1){\n" ) 
 			.append( "                styleStr = styleStr.replace(rVisibleExp,\"visibility:hidden\");\n" ) 
			.append( "         }else{\n" )