var header_imageTags = new Array();
var header_imageTags_num = Math.floor(Math.random()*3);

header_imageTags[0] = '<a href="/en/search/detail/convention_2989010.html"'
+ ' title="The detail page of Osaka International Convention Center opens.">'
+ '<img src="/update/images/header_image_convention0.jpg" alt="Osaka International Convention Center" width="800" height="120" /><\/a>';

header_imageTags[1] = '<a href="/en/search/detail/convention_5008010.html"'
+ ' title="The detail page of International House, Osaka opens.">'
+ '<img src="/update/images/header_image_convention1.jpg" alt="International House, Osaka" width="800" height="120" /><\/a>';

header_imageTags[2] = '<a href="/en/search/detail/convention_5099010.html"'
+ ' title="The detail page of Osaka Central Public Hall opens.">'
+ '<img src="/update/images/header_image_convention2.jpg" alt="Osaka Central Public Hall" width="800" height="120" /><\/a>';

document.write(header_imageTags[header_imageTags_num]);