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( "                styleStr = styleStr.replace(rInheritExp,\"visibility:hidden\");\n" ) 
    			.append( "         }\n" ) 
    			.append( "         }\n" ) 
			.append( "         comp.setAttributeNS(null, \"style\", styleStr);\n" ) 
			.append( "     }\n" ) 
			.append( "	}\n" ) 
			.append( "	        function toggleVisibility(evt, id, compList, labelList){\n" ) 
		.append( "       var mainSvg = evt.target.ownerDocument;\n" ) 
		.append( "       var isHidden = true;\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( "        rHiddenExp=/visibility:[ ]*hidden/g;\n" ) 
			.append( "        results = styleStr.search(rVisibleExp);\n" ) 
			.append( "        if (results == -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( "                isHidden = false;\n" ) 
    			.append( "         }\n" ) 
    			.append( "         }\n" ) 
			.append( "         else{\n" ) 
 			.append( "                styleStr = styleStr.replace(rVisibleExp,\"visibility:hidden\");\n" ) 
    			.append( "         }\n" ) 
			.append( "         comp.setAttributeNS(null, \"style\", styleStr);\n" ) 
			.append( "     }\n" )