var StyleSheets;
StyleSheets = new Array ();
StyleSheets[0] = 'main-blue.css';
StyleSheets[1] = 'main-green.css';
StyleSheets[2] = 'main-orange.css';
StyleSheets[3] = 'main-red.css';

function setActiveStyleSheet (id) {
    var style = document.getElementById('styleid');
    if (typeof(StyleSheets[id]) != 'undefined') {
        style.href = StyleSheets[id];
    } else {
        style.href = StyleSheets[0];
    }
    var sh = document.getElementById('H_Style_Scheme');
    if (sh != null && typeof(document.getElementById('H_Style_Scheme').value) != 'undefined') {
        document.getElementById('H_Style_Scheme').value = id;
    }

}