Yes you can. Here is my example:
Menu2_5=new Array("LiveScores","javascript:NewWin=window.open('http://www.dingliswallows.com/intlivescores.html','live1Win','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=510,height=480,top=0,left=0');window .live1Win.focus()","",0,0,0,"","","","","","",-1,-1,-1,"","");