function ichange(elmN, elmH) {
    document.getElementById(elmN).src = document.getElementById(elmH).src;
}
function HideShow(e1, e2) {

    document.getElementById(e1).style.display = "none";
    document.getElementById(e2).style.display = "block";
}
function popwindow1(url) {
    var newwindow = window.open(url, 'name', 'height=300,width=500');
    if (window.focus) { newwindow.focus() }
}

function popwindow2(url) {
    var newwindow = window.open(url, 'name', 'height=600,width=800');
    if (window.focus) { newwindow.focus() }
}