javascript - json causes problem in IE -

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i'm using bit of javascript json string send data flash project 

        var flashvars = {          xmlfile: 'http://iyt.psu.edu/xml/abington/home.xml',         preface: 'http://iyt.psu.edu/',         preload: '{"url":"flash/project.swf","x":"375","y":"237","link":"home","tween":{"prop":"y","begin":"0","finish":"-200","duration":"1"}}'     };

however preload line causes problems in ie have idea i"m might doing wrong besides using ie ; ^ )

if there trailing comma , using firefox or webkit based browser fine. in ie trailing commas no more object properties cause problem may not obvious.

this fail. see comma @ end:

var flashvars = {          "xmlfile" : "http://iyt.psu.edu/xml/abington/home.xml",         "preface" : "http://iyt.psu.edu/",         "preload" : "{'url': 'flash/project.swf' , 'x': '375 ', 'y': '237', 'link': 'home', 'tween' : {'prop':'y','begin' : '0', 'finish' : '-200' , 'duration' : '1' }}", }

also formatted json passes http://www.jslint.com/ test never hurts.

var flashvars = {          "xmlfile" : "http://iyt.psu.edu/xml/abington/home.xml",         "preface" : "http://iyt.psu.edu/",         "preload" : "{'url': 'flash/project.swf' , 'x': '375 ', 'y': '237', 'link': 'home', 'tween' : {'prop':'y','begin' : '0', 'finish' : '-200' , 'duration' : '1' }}" }

but json pasted in looks ok. also, maybe apostrophe included word document.


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