function launchVideoPlayer(videoName){
   OpenWindow("/video_player.htm?video=" + videoName, "VideoPlayer", "400", "420", "0")
}

function OpenWindow(Page, WindowName, Width, Height, Scrollbars){
   //var win = null;
   LeftPosition = (screen.width) ? (screen.width - Width) / 2 : 0;
   TopPosition = (screen.height) ? (screen.height - Height) / 2 : 0;
   
   Settings = 'height='+ Height +',width='+ Width +',top='+ TopPosition +',left='+ LeftPosition+ ',scrollbars='+Scrollbars+',resizable'
   
   window.open(Page, WindowName, Settings)
}