function new_window(url) {

var Win = window.open(url,"displayWindow",'width=695,height=350,left=50,top=50,resizable=1,scrollbars=yes,menubar=no');

} 

// New_window function opens new window with specified file inside



function checkers_window(url) {

var Win = window.open(url,"displayWindow",'width=695,height=500,left=50,top=50,resizable=1,scrollbars=yes,menubar=no');

} 

// checkers_window function opens new window with specified file inside



function open_calculator(url) {

var Win = window.open(url,"displayWindow",'width=322, height=320, top=100, left=100, scrollbars=no, location=no, directories=no, status=no, menubar=no, toolbar=no, resizable=no');

} 

// open_calculator function opens new window with specified file inside - diemsions prepared for java calculator 



function open_calculator_plus(url) {

var Win = window.open(url,"displayWindow",'width=600, height=320, top=100, left=100, scrollbars=no, location=no, directories=no, status=no, menubar=no, toolbar=no, resizable=no');

} 

// open_calculator_plus function opens new window with specified file inside - diemsions prepared for java calculator plus