issue asprise imaging scan

I have use Aspire scanner using this line .

File[] files = ScanManager.getDefaultManager().quickScanUsingUI(new File("."), null);

in a java web application (servlet and jsp) . but the problem in click scan button from any PC browser in the network the popup window lunched in the PC that application run , not appeaer to user who click scan .

any suggestion to solve this problem , or recommended example for free scanner API working in java web application

thanks