Canvas Image color changing

Hi, every one.
Please help me for a short time.
The opecity of image is 0 first. I want to change the opecity value of canvas image according the time. The changing time period is 5 second when the opecity value become bigger . The changing time period is 15 seconds when the opecity value become smaller.
This is my workscreen.
And I look forwards to your voice.
yukiamano221@gmail.com / live:.cid.674bcfb2e704887
Thank you.


Hey, I posted this in your previous post, that should do the trick, without messing with the canvas.