var win = null;
    function nWin(url,w,h,scr,res,pos) {
        if(pos=="random") {
	        l=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;
	        t=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;
        }
        if(pos=="center") {
	        l=(screen.width)?(screen.width-w)/2:100;
	        t=(screen.height)?(screen.height-h)/2:100;
        }
        else if((pos!="center" && pos!="random")||pos==null) {
	        l=20;
	        t=20;
        }
        var name="popup";
        settings='toolbar=no,location=no,directories=no,status=no,menubar=no,\
        scrollbars='+scr+',resizable='+res+',\
        width='+w+',height='+h+',left='+l+',screenX='+l+',top='+t+',screenY='+t+'';
        win=window.open(url,name,settings);
    }