var win=null;
function NewWindow(mypage,myname,w,h,scroll,pos){

        if(pos=="random"){
                LeftPosition=(screen.width)?Math.floor(Math.random()*((screen.width-w)-75)):100;
                TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
        if(pos=="center"){
                LeftPosition=(screen.width)?(screen.width-w)/2:100;
                TopPosition=(screen.height)?(screen.height-h)/2:100;}
        else if((pos!="center" && pos!="random") || pos==null){
                LeftPosition=0;
                TopPosition=20}

        settings='height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable=no';
        win=window.open(mypage,myname,settings);
        if(win.focus){win.focus();}}