function chgBg(obj,color){
if (document.all || document.getElementById)
  obj.style.backgroundColor=color;
else if (document.layers)
  obj.bgColor=color;
}

function showdiv(name) {
	if (document.all) {
		eval('document.all.' + name + '.style.visibility = "visible" ');
	} else if (document.layers) {
		eval('document.layers["' + name + '"].visibility = "visible" ');
	} else if (document.getElementById) {
		eval('document.getElementById("' + name + '").style.visibility = "visible" ');
	}
}

function hidediv(name) {
	if (document.all) {
		eval('document.all.' + name + '.style.visibility = "hidden" ');
	} else if (document.layers) {
		eval('document.layers["' + name + '"].visibility = "hidden" ');
	} else if (document.getElementById) {
		eval('document.getElementById("' + name + '").style.visibility = "hidden" ');
	}
}

function createXmlHttpObject() {
	http_request = false;
	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			// set type accordingly to anticipated content type
			//http_request.overrideMimeType('text/xml');
			http_request.overrideMimeType('text/html');
		}
	}else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	return http_request;
}