/*
 *	常用JS
 *	Cole modify:03/31/2009
*/

//首页产品分类菜单
function showProClass(no)
{
	var obj = document.getElementById("proClass").getElementsByTagName("dt");
	if (!obj) return;
	
	for (var i = 0, cnt = obj.length; i < cnt; i++)
	{
		if (i == no)
		{
			obj[i].getElementsByTagName("span")[0].style.display = "";
		}
		else
		{
			obj[i].getElementsByTagName("span")[0].style.display = "none";
		}
	}
}

function showSub(n)
{
	if (n < 1) return;
	
	var obj = document.getElementById("sub" + n);
	if (!obj) return;
	
	obj.style.display = "";
}

function hideSub(n)
{
	if (n < 1) return;
	
	var obj = document.getElementById("sub" + n);
	if (!obj) return;
	
	obj.style.display = "none";
}