function GetWindowHeight() {
    var myHeight = 0;
    if (typeof (window.innerWidth) == 'number') {
        //Non-IE
        //alert("nonIE");
        myHeight = window.innerHeight;
    } else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
        //IE 6+ in 'standards compliant mode'
        //alert("IE 6+ in 'standards compliant mode'");
        myHeight = document.documentElement.clientHeight;

    } else if (document.body && (document.body.clientWidth || document.body.clientHeight)) {
        //IE 4 compatible
        //alert("IE 4 compatible");
        myHeight = document.body.clientHeight;
    }
//    alert("GetWindowHeight+++");
    return myHeight;
}