/*
 *	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 showMenu(id)
{
	var objMenu = document.getElementById("menu" + id);
	//alert('a');
	objMenu.style.display = "block";
	//alert('b');
}

function hiddMenu(id)
{
	var objMenu = document.getElementById("menu" + id);
	objMenu.style.display = "none";
}

function MM_swapImgRestore()
{
	var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages()
{
	var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
	var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
	if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d)
{
	var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
	d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
	if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
	if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage()
{
	var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
	if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

MM_preloadImages('images/nav01.jpg','images/nav2.jpg','images/nav3.jpg','images/nav4.jpg','images/nav5.jpg','images/nav6.jpg');