Bug 145705 [regression]Tooltip of chart cannot display completely
Description: Tooltip of chart cannot display completely Steps to reproduce: 1. Set tooltip "abcdef\ndeeeeee" to X-Axis 2. preview Expected result: tooltip can be displayed completely Actual result: Only can see the first line of tooptip
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/EventHandlers.java
.append( "	        color = color.substring(0, bracketIndex);\n" ) 
    	.append( "	        hexColor = getHexFromRGB(color);\n" ) 
    	.append( "	        hc = getHighlight(hexColor, highlight, lookUpTable, id);\n" ) 
    	.append( "	        return style.substring(0, index) + styleAttr+hc+ style.substring(index+bracketIndex+styleAttr.length+1, style.length);\n" ) 
    	.append( "	   }    \n" ) 
    	.append( "	}\n" ) 
		//
		
		
		
		
    	
		    	
    	.append( "	function redirect(target, url){\n" ) 
    	.append( "		if (target =='_blank'){\n" ) 
    	.append( "			open(url);\n" ) 
    	.append( "		}\n" ) 
    	.append( "		else if (target == '_top'){\n" ) 
    	.append( "          window.top.location.href=url;\n" ) 									
    	.append( "		}\n" ) 
    	.append( "		else if (target == '_parent'){\n" ) 
    	.append( "          parent.location.href=url;\n" ) 									
    	.append( "		}\n" ) 
    	.append( "		else if (target == '_self'){\n" ) 
    	.append( "          parent.location.href=url;\n" ) 									
    	.append( "		}\n" )     	
    	.append( "		else if (target == '_self'){\n" ) 
    	.append( "          parent.location.href=url;\n" ) 									
    	.append( "		}\n" )     	
    	.append( "		else{\n" )