function $(s){
    return document.getElementById(s);
}

function $$(name){
	return document.getElementsByName(name);
}

function trim(s) { 
    return s.replace( /^ */, "" ).replace( / *$/, "" );
}

function preLoadimg(){
    for( var i =1;i<17;i++)
    {
        var img = new Image();
        img.src="images/home_"+i+".jpg";
    }
}

function moverout(obj,index){
    obj.src = "images/home_"+index+".jpg";
}
function checkImg(){
    var imgs = $("timgs").getElementsByTagName("img");
    for(var i =0;i < imgs.length;i++){
        if(imgs[i].src.indexOf("pp_line.jpg") == -1){
            var ow = imgs[i].offsetWidth;
            var oh = imgs[i].offsetHeight;
            var bl = parseFloat(72/ow,10).toFixed(4);
            imgs[i].width = 72;
            imgs[i].height = Math.floor(oh*bl);
        }
    }
}
window.onload =function pageLoad(){
    preLoadimg();
    checkImg();
}
/*Menu*/
var LastID = "";
function getsubtype(pid){
    if(LastID != "" && LastID != pid){
        $("td"+LastID).style.display = "none";
    }
    $("td"+pid).style.display = $("td"+pid).style.display == "block"?"none":"block";
    LastID = pid;
}

function AddFavorite(sURL, sTitle)
{
    try
    {
        window.external.addFavorite(sURL, sTitle);
    }
    catch (e)
    {
        try
        {
            window.sidebar.addPanel(sTitle, sURL, "");
        }
        catch (e)
        {
            alert("加入收藏失败，请使用Ctrl+D进行添加");
        }
    }
}

//page
function getPageInfo(DataCount,totalPage,absolutePage,strUrl,info)
{ 
    if(isNaN(totalPage))
    {
     	totalPage=1;
    }
    if(totalPage < absolutePage) 
    {
        absolutePage=1;
    }
    var pgStr = '共'+DataCount+info+'&nbsp;&nbsp;<font color="red">'+ absolutePage + '</font>/'  + totalPage + '&nbsp;&nbsp;';
    
    //分页字符串组成   
    if(absolutePage>1)
    { 
        pgStr+='<a href="'+strUrl+'1.html">最前页</a>&nbsp;&nbsp;';
    	pgStr+='<a href="'+strUrl+(absolutePage -1)+'.html">上一页</a>&nbsp;&nbsp;'; 
    }
    else
    {  
        pgStr+='最前页&nbsp;&nbsp;';
    	pgStr+='上一页&nbsp;&nbsp;';  
    } 
    if(absolutePage<totalPage)
    { 
        pgStr+='<a href="'+strUrl+(absolutePage+1)+'.html">下一页</a>&nbsp;&nbsp;';
        pgStr+='<a href="'+strUrl+totalPage+'.html">最后页</a>';
    }
    else
    {  
 	    pgStr+='下一页&nbsp;&nbsp;';
 	    pgStr+= '最后页';
    }
    $("divPage").innerHTML = pgStr;
}
function cs(tid){
    var obj = $("c"+tid);
    if( obj != null){
        obj.style.color = "#ff6600";
    }
}

function cs2(pid,tid){
    var obj = $("tdp"+pid);
    if(obj != null){
        obj.click();
    }
    obj = $("subtype"+tid);
    if(obj != null){
        obj.style.color = "#ff6600";
        obj.style.fontWeight="bold";
    }
}

function checkform(frm){
    var key = trim(frm.keyword.value);
    if( key == ""){
        alert("请输入搜索产品关键字！");
    }
    else
    {
        frm.action = "search.html?p=1&k="+escape(key);
        frm.submit();
    }
}

function getSearchPageInfo(DataCount,totalPage,absolutePage)
{ 
    if(isNaN(totalPage))
    {
     	totalPage=1;
    }
    if(totalPage < absolutePage) 
    {
        absolutePage=1;
    }
    var pgStr = '共'+DataCount+'个产品&nbsp;&nbsp;<font color="red">'+ absolutePage + '</font>/'  + totalPage + '&nbsp;&nbsp;';
    var ky = escape($("keyword").value);
    //分页字符串组成   
    if(absolutePage>1)
    { 
        pgStr+='<a href="search.html?p=1&k='+ky+'">最前页</a>&nbsp;&nbsp;';
    	pgStr+='<a href="search.html?p='+(absolutePage -1)+'&k='+ky+'">上一页</a>&nbsp;&nbsp;'; 
    }
    else
    {  
        pgStr+='最前页&nbsp;&nbsp;';
    	pgStr+='上一页&nbsp;&nbsp;';  
    } 
    if(absolutePage<totalPage)
    { 
        pgStr+='<a href="search.html?p='+(absolutePage+1)+'&k='+ky+'">下一页</a>&nbsp;&nbsp;';
        pgStr+='<a href="search.html?p='+totalPage+'&k='+ky+'">最后页</a>';
    }
    else
    {  
 	    pgStr+='下一页&nbsp;&nbsp;';
 	    pgStr+= '最后页';
    }
    $("divPage").innerHTML = pgStr;
}