Download videos from youtube in mp4 format without any software using javascripts

You can download Videos from Youtube without using any software or tools just usig a simple javascripts , this javascripts will doenload youtube video in mp4 format. that can be played in all latest cell phones and Ipods, download videos without any delay.....enjoy


here is the java scripts
Steps >>>>> open the youtube video , wait until video buffering starts
>>>>> then enter this javascripts in Address bar and press enter


javascript:if(document.location.href.match(/http:\/\/[a-zA-Z\.]*youtube\.com\/watch/)){document.location.href='http://www.youtube.com/get_video?fmt='+(isHDAvailable?'22':'18')+'&video_id='+swfArgs['video_id']+'&t='+swfArgs['t']}