How can I get the video's image in JW Player?

How can I get the video's image to using with sendEvent(); in JW Player? For example i'm using

var playerx = document.getElementById(player);
playerx.sendEvent("LOAD","http://www.domain.com/videos开发者_开发知识库/"+x);
playerx.sendEvent("PLAY","true");

for click event for starting the videos while clicking a video's thumb in a page. I want x's thumb comes with player's flashvars in.

file=x.flv&image=videos/thumbs/xxx.png

I want to get the thumb when on click in this embed code's flashvars.

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I found the solution;

player.sendEvent("LOAD",{'file': 'http://www.domain.com/videos/x.flv', 'image':'videos/thumbs/thumb.jpg'});

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with JW Player >=5.2

jwplayer().load({
    file:'http://mydomain.com/my.mov',
    image:'http://mydomain.com/myposter.jpg'
});

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playlist: [{
    file: "http://file url",
    image: "https://image URL",
    title: "title"