function mmenuURL()//主导航、二级导航显示函数
{
var thisURL = document.URL;
tmpUPage = thisURL.split( "/" );  
thisUPage_s = tmpUPage[ tmpUPage.length-1 ]; 
//thisUPage=thisUPage.substring(0,4)

		if(thisUPage_s=="index.html")
		{
			getObject("mm1").className="menuhover"
			getObject("mb1").className = "mb1";
			getObject("mb1").style.display= "";
		}
		else if(thisUPage_s=="about.html"||thisUPage_s=="product.html"||thisUPage_s=="quality.html")
		{
			getObject("mm2").className="menuhover"
			getObject("mb2").className = "mb2";
			getObject("mb2").style.display= "";
		}
		else if(thisUPage_s=="products.html"||thisUPage_s=="productsort-1.html"||thisUPage_s=="productsort-2.html"||thisUPage_s=="productsort-3.html"||thisUPage_s=="productsort-4.html"||thisUPage_s=="productsort-5.html"||thisUPage_s=="productsort-6.html"||thisUPage_s=="productsort-7.html"||thisUPage_s=="productsort-8.html"||thisUPage_s=="productsort-8.html"||thisUPage_s=="productsort-10.html")
		{
			getObject("mm3").className="menuhover"
			getObject("mb3").className = "mb3";
			getObject("mb3").style.display= "";
		}	
		else if(thisUPage_s=="news.html")
		{
			getObject("mm4").className="menuhover"
			getObject("mb4").className = "mb4";
			getObject("mb4").style.display= "";
		}
		else if(thisUPage_s=="tech.html"||thisUPage_s=="word.html"||thisUPage_s=="commend.html"||thisUPage_s=="drive.html"||thisUPage_s=="soft.html"||thisUPage_s=="faq.html"){
			getObject("mm5").className="menuhover"
			getObject("mb5").className = "mb5";
			getObject("mb5").style.display= "";
		}
		else if(thisUPage_s=="contact.html"||thisUPage_s=="service.html"){
			getObject("mm6").className="menuhover"
			getObject("mb6").className = "mb6";
			getObject("mb6").style.display= "";
		}
		else
		{
			getObject("mm1").className="menuhover";
			getObject("mb1").className = "mb1";
			getObject("mb1").style.display= "";
		}
}

window.load=mmenuURL()


var waitting = 1;
var secondLeft = waitting;
var timer;				
var sourceObj;
var number;
function getObject(objectId)//获取id的函数 
    {
	    if(document.getElementById && document.getElementById(objectId)) {
	    // W3C DOM
	    return document.getElementById(objectId);
	    } else if (document.all && document.all(objectId)) {
	    // MSIE 4 DOM
	    return document.all(objectId);
	    } else if (document.layers && document.layers[objectId]) {
	    // NN 4 DOM.. note: this won't find nested layers
	    return document.layers[objectId];
	    } else {
	    return false;
	    }
    }
function SetTimer()//主导航时间延迟的函数
    {
	    for(j=1; j <10; j++){
		    if (j == number){
		        if(getObject("mm"+j)!=false){
					if (number == 1)
					{
						getObject("mm"+ number).className = "menuhover";
			            getObject("mb"+ number).className = "mb1";
						getObject("mb"+ number).style.display = "";
					}
					if (number == 2)
					{
						getObject("mm"+ number).className = "menuhover";
			            getObject("mb"+ number).className = "mb2";
						getObject("mb"+ number).style.display = "";
					}
					if (number == 3)
					{
						getObject("mm"+ number).className = "menuhover";
			            getObject("mb"+ number).className = "mb3";
						getObject("mb"+ number).style.display = "";
					}
					if (number == 4)
					{
						getObject("mm"+ number).className = "menuhover";
			            getObject("mb"+ number).className = "mb4";
						getObject("mb"+ number).style.display = "";
					}
					if (number == 5)
					{
						getObject("mm"+ number).className = "menuhover";
			            getObject("mb"+ number).className = "mb5";
						getObject("mb"+ number).style.display = "";
					}
					if (number == 6)
					{
						getObject("mm"+ number).className = "menuhover";
			            getObject("mb"+ number).className = "mb6";
						getObject("mb"+ number).style.display = "";
					}
			    }
		    }
		    else{
		         if(getObject("mm"+j)!=false){
					
				    getObject("mm"+ j).className = "";
			        getObject("mb"+ j).className = "hide";
					getObject("mb"+ j).style.display="none";
			    }
		    }
	    }
    }
function CheckTime()//设置时间延迟后
    {
	    secondLeft--;
	    if ( secondLeft == 0 )
	    {
	    clearInterval(timer);						
	    SetTimer();		
	    }
    }
function showM(thisobj,Num)//主导航鼠标滑过函数，带时间延迟
    {
	    number = Num;
	    sourceObj = thisobj;
	    secondLeft = 1;
	    timer = setTimeout('CheckTime()',100);
    }
function OnMouseLeft()//主导航鼠标移出函数，清除时间函数
    {
	    clearInterval(timer);
    }