function changeImg(id, source) {
	document.getElementById(id).src = source;
}
function selectText(input) {
    if (input.createTextRange) {
        var oRange = input.createTextRange();
        oRange.moveStart("character", 0);
        oRange.moveEnd("character", 0);
        oRange.select();
    } else if (input.setSelectionRange) {
        input.setSelectionRange(0, input.value.length);
    }

    input.focus();
};