function showandhide(object) {
toggle_style = getStyle(document.getElementById(object), "display");
if (document.layers && document.layers[object] != null) {
		if (document.layers[object].display == "block") {
			document.layers[object].display = "none";
			}
		else {
			document.layers[object].display = "block";
			}
		}
	
if (document.all) {
		
		if (document.all[object].style.display == "block") {
			document.all[object].style.display = "none";
			}
		else {
			document.all[object].style.display = "block";
			}
		}
	
if (document.getElementById) {
		if (toggle_style == "block") {
			document.getElementById(object).style.display = "none";
			}
		else {
			document.getElementById(object).style.display = "block";
			}
		}
}

function getStyle(oElm, strCssRule){
	var strValue = "";
	if(document.defaultView && document.defaultView.getComputedStyle){
		strValue = document.defaultView.getComputedStyle(oElm, "").getPropertyValue(strCssRule);
	}
	else if(oElm.currentStyle){
		strCssRule = strCssRule.replace(/\-(\w)/g, function (strMatch, p1){
			return p1.toUpperCase();
		});
		strValue = oElm.currentStyle[strCssRule];
	}
	return strValue;
}