var win=null; 
 function NewWindow(mypage,myname,w,h,scroll,pos){ 
      if(pos=="random"){LeftPosition=(screen.availWidth)?Math.floor(Math.random()*(screen.availWidth-w)):10;TopPosition=(screen.availHeight)?Math.floor(Math.random()*((screen.availHeight-h)-75)):10;} 
      if(pos=="center"){LeftPosition=(screen.availWidth)?(screen.availWidth-w)/2:10;TopPosition=(screen.availHeight)?(screen.availHeight-h)/2:10;} 
      if(pos=="default"){LeftPosition=10;TopPosition=10} 
      else if((pos!="center" && pos!="random" && pos!="default") || pos==null){LeftPosition=0;TopPosition=20} 
      settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no'; 
      win=window.open(mypage,myname,settings); 
      if(win.focus){win.focus();} 
      }