function CheckHeader(gvw)
{
    var el = document.getElementById('TemplateMaster_MainContent_'+gvw+'_HeaderButton');
    if (el.checked) { el.click(); el.click(); CheckAll(el)}
}
function CheckHeader2(gvw)
{
    var el = document.getElementById(gvw+'_HeaderButton');
    if (el.checked) { el.click(); el.click(); CheckAll(el)}
}

function CheckAll(me) 
{
    var index = me.name.indexOf('_HeaderButton'); var prefix = me.name.substr(0, index);
    for (i = 0; i < document.forms[0].length; i++) { var o = document.forms[0][i];
        if (o.type == 'checkbox'){ if (me.name != o.name) {
            if (o.id.substring(0, prefix.length) == prefix || o.name.substring(0, prefix.length) == prefix) { 
                o.checked = !me.checked; o.click(); }}}}
}

if(typeof(Sys)!=='undefined')Sys.Application.notifyScriptLoaded();