Bug 168837 The gradient with transparent color does not work [0001]
Description: The background gradient color does not work. Build number: 2.1.2.v20061221-0710 Steps to reproduce: 1. Preview the attached design file. Expected result: Background gradient color both work when preview and in Layout. Actual result: Background gradient color does not work when preview but work in Layout. Error log: N/A
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGGraphics2D.java
* @param currentElement the element to add style information to.
	 * @param isClipped boolean that determines whether to defer the clipping of the element
	 */
	protected void setFillColor( Element currentElement, boolean deferClipped)
	{
		Element element = currentElement;
		if (deferStrokColor != null){
			  
			element = deferStrokColor;
		}
		String style = element.getAttribute( "style" ); 
		if ( style == null )
			style = ""; 
		if ( paint == null )
		{
			if ( color == null )
				return;
			String alpha = alphaToString( color );
			if ( alpha != null )
				style += "fill-opacity:" + alpha + ";"; 
			element.setAttribute( "style", style + "fill:" + serializeToString( color ) + ";stroke:none;" ); 
		}
		else
		{
			if ( paint instanceof SVGGradientPaint )
				element.setAttribute( "style", style + "fill:url(#" + ( (SVGGradientPaint) paint ).getId( ) + ");stroke:none;" ); 
		}
		if (styleClass != null)
			element.setAttribute("class", styleClass); 
		if (id != null)