Hidden Iframe content printing problem in IE

I have got one issue in IE8, ie I could not able to print the hidden iframe content in IE8.. If i try to print then page will be automatically hangs on & reloads it again... it got fixed using below code....

if(IE8)
window.frames[iframeID].document.execCommand('print', false, null);

ELSE IF(OTHER BROWSERS)
window.frames[iframeID].focus();
window.frames[iframeID].print();