var m1off = new Image(); 
var m2off = new Image(); 
var m3off = new Image(); 
var m4off = new Image();
var m5off = new Image();
var m6off = new Image();
var m7off = new Image();

var m1on = new Image(); 
var m2on = new Image(); 
var m3on = new Image(); 
var m4on = new Image(); 
var m5on = new Image(); 
var m6on = new Image(); 
var m7on = new Image(); 

function on(test,test2) {
    test.src = test2.src;
}

function off(test,test2) {
    test.src = test2.src;
}