var smallwindow=null;

function tinywindow(filename){
				var smallwindow=null;
                winclose(smallwindow);  
                filename="window/"+filename;
		        winname = "main";
                winopts = "toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,height=350,width=425";
                
                smallwindow = window.open(filename,winname,winopts)
                smallwindow.focus();
        }
		
function newwindow(filename){
				var smallwindow=null;
                winclose(smallwindow);  
		        winname = "main_2";
                winopts = "toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,height=600,width=600";
                
                smallwindow = window.open(filename,winname,winopts)
                smallwindow.focus();
        }		

function winclose(smallwindow){
                if (smallwindow != null && smallwindow.open){
                smallwindow.close();
                }
}