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/**
* 給結點Ìí¼Ó濾鏡
* 1.filterStyleÐÎʽ£ºÂ˾µÃû³Æ¼°ÆäºóµÄ²¿·Ö
* 2.Alpha Â˾µ£ºALPHA(opacity=opacity,finishopacity=finishopacity,style=style,startx=startx, starty=starty,finishx=finishx,finishy=finishy)}--͸Ã÷
* 3.Blur Â˾µ£ºBlur(add=add,direction=direction,strength=strength)--Ä£ºý
* 4.FlipH Â˾µ£ºFlipH--ˮƽ·­×ª
* 5.FlipV Â˾µ£º FlipV--´¹Ö±·­×ª
* 6.Chroma Â˾µ£ºChroma(color=color)--Ö¸¶¨ÑÕɫ͸Ã÷
* 7.DropShadow Â˾µ£ºDropshadow(color=color,offx=ofx,offy=offy,positive=positive)--ÒõÓ°
* 8.Glow Â˾µ£ºGlow(color=color,strength)--±ßÔµ·¢¹â
* 9.Gray Â˾µ£ºGray--°ÑͼƬ±ä³É»ÒÉ«
* 10.Invert Â˾µ£ºInvert--¿ÉÊÓ»¯ÊôÐÔÈ«²¿·­×ª
* 11.Xray Â˾µ£ºXray--“X”¹âƬ
* 12.Light Â˾µ£ºLight¿ÉÒÔµ÷ÓÃËûµÄ·½·¨½øÐд¦Àí£º
* 12-1.addAmbient(iRed,iGreen,iBlue,iStrength)--ΪÂ˾µÌí¼Ó»·¾³¹â
* 12-2.changeColor (iLightNumber,iRed,iGreen,iBlue,fAbsolute)--¸Ä±ä¹âµÄÑÕÉ«
* 12-3.AddCone ¼ÓÈë׶ÐιâÔ´
* 12-4.AddPoint ¼ÓÈëµã¹âÔ´
* 12-5.Changstrength ¸Ä±ä¹âÔ´µÄÇ¿¶È
* 12-6.Clear Çå³ýËùÓеĹâÔ´
* 12-7.MoveLight Òƶ¯¹âÔ´
* 13.Mask Â˾µ£ºMask(color=color)--½¨Á¢¸²¸ÇÓÚ¶ÔÏó±íÃæµÄĤ
* 14.Shadow Â˾µ£ºShadow(color=color,direction=direction)--½¨Á¢Í¶Ó°
* 15.Wave Â˾µ£ºWave(add=add,freq=freq,lightstrength=strength,phase=phase,strength=strength)--²¨ÐÎÏÔʾ
*/
function addFilter(node, filterStyle){
if(!(node=$(node))){
return false;
}
node.style.filter=filterStyle;
}