var images_ary=new Array(
'./images/gl_salon_on.jpg',
'./images/gl_salon_off.jpg',
'./images/gl_facial_on.jpg',
'./images/gl_facial_off.jpg',
'./images/gl_body_on.jpg',
'./images/gl_body_off.jpg',
'./images/gl_relax_on.jpg',
'./images/gl_relax_off.jpg',
'./images/gl_datumou_on.jpg',
'./images/gl_datumou_off.jpg',
'./images/gl_nail_on.jpg',
'./images/gl_nail_off.jpg',
'./images/gl_sc_on.jpg',
'./images/gl_sc_off.jpg'
);

function preLoad(imgAry) {
    var imgMax=imgAry.length;
    var images=new Array(imgMax);
    for (var i=0; i<imgMax; i++) {
        images[i]=new Image();
        images[i].src=imgAry[i];
    }
}