function disp(url){ 
window.open(url, "window_name", "width=486,height=700,scrollbars=yes"); 
} 

function disp2(url){ 
window.open(url, "window_name", "width=486,height=700,scrollbars=yes"); 
} 

function disp3(url){ 
window.open(url, "window_name", "width=486,height=700,scrollbars=yes"); 
}