var myWidth = 0, myHeight = 0;

if (typeof (window.innerWidth) == 'number') {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
} else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
} else if (document.body && (document.body.clientWidth || document.body.clientHeight)) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
}

$(window).load(function () {
    $(".box_wait").hide();
    // $('.wrapper').css('min-height', myHeight).css('height', myHeight);
})