function openWindow(mypage, myname, w, h, scroll) 
{
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable'
	gmtWindow = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) { gmtWindow.window.focus(); }
}

function find_all_checkbox_values(what, checkbox_name) {
	parameters = '';
	what = document.getElementById(what);
	for (var i=0, j=what.elements.length; i<j; i++) {
		if(what.elements[i].name == checkbox_name && what.elements[i].checked == true) {
			parameters += "&" + what.elements[i].name + "=" + encodeURI(what.elements[i].value);
		}
	}
	return parameters;
}

function find_all_form_elements(form_name) {
	parameters = '';
	what = document.getElementById(form_name);
	for (var i=0, j=what.elements.length; i<j; i++) {
		if( (what.elements[i].type == 'radio' || what.elements[i].type == 'checkbox') && what.elements[i].checked != true) {
		} else {
			parameters += "&" + what.elements[i].name + "=" + encodeURI(what.elements[i].value);
		}
	}
	return parameters;
}