function centanet_change_topmenu_hover(obj) {
	var src = obj.src;	
	var updateSrc = src.replace(/\.gif/, "_over.gif");	
	obj.src = updateSrc;
}

function centanet_change_topmenu_normal(obj) {
	var src = obj.src;
	var updateSrc = src.replace(/_over\.gif/, ".gif");
	obj.src = updateSrc;
}

function centanet_change_topmenu_hover2(obj) {
	var src = obj.src;	
	var updateSrc = src.replace(/\.jpg/, "_over.jpg");	
	obj.src = updateSrc;
}

function centanet_change_topmenu_normal2(obj) {
	var src = obj.src;
	var updateSrc = src.replace(/_over\.jpg/, ".jpg");
	obj.src = updateSrc;
}

function cpal_search_check(f) {
	if (trim(f.keywords.value) == "")
	{
		alert("請輸入搜尋字");
		return false;
	}
	f.key.value = f.keywords.value;
	return true;
}

function changeFontSize(i)
{
	var b = document.body;
	alert(b.style.fontSize);
	b.style.fontSize = i + "px";
}


function trim(value) {
	return value.replace(/^\s+|\s+$/g,"");
}
function ltrim(value) {
	return value.replace(/^\s+/,"");
}
function rtrim(value) {
	return value.replace(/\s+$/,"");
}