function checktopsearch()
{
        if (Jtrim(document.topsearchform.keyword.value)=='' || Jtrim(document.topsearchform.keyword.value)=='请输入查询关键词') {
                window.alert ("请输入查询关键词 ！");
	            document.topsearchform.keyword.focus();
                return false;
        }
        return true
}
function checkrenyuansearch()
{
        if (Jtrim(document.renyuan.keyword.value)=='' || Jtrim(document.renyuan.keyword.value)=='请输入要查询人员的姓名') {
                window.alert ("请输入要查询人员的姓名！");
	            document.renyuan.keyword.focus();
                return false;
        }
        return true
}
function checkshopsearch()
{
        if (Jtrim(document.shopsearchform.keyword.value)=='' || Jtrim(document.shopsearchform.keyword.value)=='请输入查询关键词') {
                window.alert ("请输入查询关键词 ！");
	            document.shopsearchform.keyword.focus();
                return false;
        }
        return true
}
function checkzhiwukusearch()
{
        //if (Jtrim(document.searchzhiwuku.keyword.value)=='' || Jtrim(document.searchzhiwuku.keyword.value)=='请输入查询关键词') {
         //       window.alert ("请输入查询关键词 ！");
	    //        document.searchzhiwuku.keyword.focus();
        //        return false;
        //}
		if (Jtrim(document.searchzhiwuku.keyword.value)=='请输入查询关键词'){
		    document.searchzhiwuku.keyword.value="";
		}
        return true
}
function checkcailiaosearch()
{
        if (Jtrim(document.cailiaosearchform.keyword.value)=='' || Jtrim(document.cailiaosearchform.keyword.value)=='请输入查询关键词') {
                window.alert ("请输入查询关键词 ！");
	            document.cailiaosearchform.keyword.focus();
                return false;
        }
        return true
}
function checkdiaochasearch()
{
        if (Jtrim(document.diaochasearchform.keyword.value)=='' || Jtrim(document.diaochasearchform.keyword.value)=='请输入查询关键词') {
                window.alert ("请输入查询关键词 ！");
	            document.diaochasearchform.keyword.focus();
                return false;
        }
        return true
}
function CheckComment()
{   
		if (Jtrim(document.commentform.Content.value)==""){
			alert("评论内容不能为空！");
	        document.commentform.Content.focus();
			return false;
		}
		if (strlength(Jtrim(document.commentform.Content.value))<2){
			alert("评论内容不能少于2字符或1汉字，请返回调整！");
	        document.commentform.Content.focus();
			return false;
		}
		if (strlength(Jtrim(document.commentform.Content.value))>500){
			alert("评论内容限250汉字或500字符，请返回调整！");
	        document.commentform.Content.focus();
			return false;
		}
	document.commentform.submit();
}


function checkquicksearch()
{
        //if (Jtrim(document.quicksearchform.keyword.value)=='' || Jtrim(document.quicksearchform.keyword.value)=='请输入查询关键词') {
         //       window.alert ("请输入查询关键词 ！");
	     //       document.quicksearchform.keyword.focus();
         //       return false;
        //}
        return true
}


function checkbbslogin()
{
        if (Jtrim(document.bbslogin.name.value)=='') {
                window.alert ("请输入您的会员名 ！");
	            document.bbslogin.name.focus();
                return false;
        }
        if (Jtrim(document.bbslogin.password.value)=='') {
                window.alert ("请输入您的密码 ！");
	            document.bbslogin.password.focus();
                return false;
        }
        return true
}


function checktopmemberlogin()
{
        if (Jtrim(document.toploginform.username.value)=='') {
                window.alert ("请输入您的会员名 ！");
	            document.toploginform.username.focus();
                return false;
        }
	    if (!isusername(document.toploginform.username.value)){
	       document.toploginform.username.focus();
           return false;
        }
		if (Jtrim(document.toploginform.username.value).length<5||Jtrim(document.toploginform.username.value).length>20) {
            window.alert ("您的会员名需大于4位且不能超过20位！")
	        document.toploginform.username.focus();
            return false;
        }
        if (Jtrim(document.toploginform.password.value)=='') {
                window.alert ("请输入您的密码 ！");
	            document.toploginform.password.focus();
                return false;
        }
        if (Jtrim(document.toploginform.password.value).length<6||Jtrim(document.toploginform.password.value).length>20) {
                window.alert ("您的密码数需大于5位且不能超过20位！");
	            document.toploginform.password.focus();
                return false;
        }
        if (Jtrim(document.toploginform.verifycode.value)=='') {
    		  alert("请输入验证码！");        
    		  document.toploginform.verifycode.focus();        
    		  return (false);        
   		 } 
        if (Jtrim(document.toploginform.verifycode.value).length!=4) {
                window.alert ("请输入正确的验证码！");
	            document.toploginform.verifycode.focus();
                return false;
        }
        return true
}

function checksimplememberlogin()
{
        if (Jtrim(document.simpleloginform.username.value)=='') {
                window.alert ("请输入您的会员名 ！");
	            document.simpleloginform.username.focus();
                return false;
        }
	    if (!isusername(document.simpleloginform.username.value)){
	       document.simpleloginform.username.focus();
           return false;
        }
		if (Jtrim(document.simpleloginform.username.value).length<5||Jtrim(document.simpleloginform.username.value).length>20) {
            window.alert ("您的会员名需大于4位且不能超过20位！")
	        document.simpleloginform.username.focus();
            return false;
        }
        if (Jtrim(document.simpleloginform.password.value)=='') {
                window.alert ("请输入您的密码 ！");
	            document.simpleloginform.password.focus();
                return false;
        }
        if (Jtrim(document.simpleloginform.password.value).length<6||Jtrim(document.simpleloginform.password.value).length>20) {
                window.alert ("您的密码数需大于5位且不能超过20位！");
	            document.simpleloginform.password.focus();
                return false;
        }
        return true
}

function setGoRegUrl(url)
{
    window.location.href=url;
}

function addProductToCart(pruductid,pruductnum) {
	if(isNull(pruductnum) || !isInt(pruductnum) || new Number(pruductnum)<=0){
		alert("购买数量必须为大于0的正整数");			
		return false;
	}
	var open_url = "/order/shoppingcar.asp?AddShoppingCarID=" + pruductid + "&AddPruductNum=" + pruductnum;
	//window.open(open_url,'','status=0,directories=0,resizable=0,toolbar=0,location=0,scrollbars=0,width=320,height=120');
	//window.open (open_url, 'newwindow', 'height=300, width=400, top=0,left=0, toolbar=yes, menubar=yes, scrollbars=yes, resizable=yes,location=yes, status=yes')
	window.open (open_url)
}
		function doCompare() {
			var es = document.forms['CompareProduct'].elements;
			var n = 0;
			for (var i = 0; i < es.length; ++i) {
				var e = es[i];
				if (e.name == 'ProductID' && e.checked) { ++n; }
			}
			if (n > 1 && n <= 6) { document.forms['CompareProduct'].submit();  }
			else if(n > 6){ alert('商品对比请控制在2—6种商品'); }
			else { alert('请先选择您要对比的商品，至少选择两种商品。'); }
		}

function checkcomment()
{
        if (Jtrim(document.myform.UserName.value)=='') {
                window.alert ("请输入您的会员名 ！")
	           document.myform.UserName.focus();
                return false
        }
		
	    //if (!isusername(document.myform.UserName.value)){
        //   return false;
        //}
		if (Jtrim(document.myform.UserName.value).length<6||Jtrim(document.myform.UserName.value).length>20) {
            window.alert ("您的会员名需大于5位且不能超过20位！")
	        document.myform.UserName.focus();
            return false
        }
		
        //if (Jtrim(document.myform.Password.value)=='') {
        //        window.alert ("请输入您的密码 ！")
        //        return false
       // }
        //if (Jtrim(document.myform.Password.value).length<6||Jtrim(document.myform.Password.value).length>20) {
          //      window.alert ("您的密码数需大于5位且不能超过20位！")
         //       return false
        //}
		
		if (Jtrim(document.myform.content.value).length<2||Jtrim(document.myform.content.value).length>500) {
            window.alert ("评论内容需大于2汉字且不能超过500汉字！")
	        document.myform.content.focus();
            return false
        }
        return true
}












//搜索验证函数
<!--
function xabizsearch()
{
var KeyWord=formsearch.KeyWord.value
if(formsearch.KeyWord.value=="在此输入查询关键词")
{
	alert("请输入您要查询的关键字!");
	return false;
}
if(formsearch.KeyWord.value=="")
{
	alert("请输入您要查询的关键字!");
	return false;
}
}
//-->


//全站搜索
<!--
function xabizallsitesearch()
{
var SearchArea=document.xabizsearch.SearchArea.value
var KeyWord=document.xabizsearch.KeyWord.value

if(document.xabizsearch.SearchArea.value==""||document.xabizsearch.SearchArea.value=="0")
{
	alert("请选择搜索区域!");
	return false;
}
if(document.xabizsearch.KeyWord.value=="输入查询关键字")
{
	alert("请输入您要查询的关键字!");
	return false;
}
if(document.xabizsearch.KeyWord.value=="")
{
	alert("请输入您要查询的关键字!");
	return false;
}
//资讯搜索
//if(document.xabizsearch.SearchArea.value=="0"){
//	document.xabizsearch.action="http://www.chinaz.com/plus/search.php?keyword="+KeyWord+"";
//	document.xabizsearch.submit();
//}
//商机搜索
if(document.xabizsearch.SearchArea.value=="1")
location.href="/Trade/search.asp?SearchArea="+SearchArea+"&keyword="+KeyWord+"";
if(document.xabizsearch.SearchArea.value=="2")
location.href="/Trade/search.asp?SearchArea="+SearchArea+"&keyword="+KeyWord+"";
if(document.xabizsearch.SearchArea.value=="3")
location.href="/Trade/search.asp?SearchArea="+SearchArea+"&keyword="+KeyWord+"";
if(document.xabizsearch.SearchArea.value=="4")
location.href="/Trade/search.asp?SearchArea="+SearchArea+"&keyword="+KeyWord+"";
if(document.xabizsearch.SearchArea.value=="5")
location.href="/Trade/search.asp?SearchArea="+SearchArea+"&keyword="+KeyWord+"";
if(document.xabizsearch.SearchArea.value=="6")
location.href="/Trade/search.asp?SearchArea="+SearchArea+"&keyword="+KeyWord+"";
if(document.xabizsearch.SearchArea.value=="7")
location.href="/Trade/search.asp?SearchArea="+SearchArea+"&keyword="+KeyWord+"";
//产品展示搜索
if(document.xabizsearch.SearchArea.value=="8")
location.href="/Product/search.asp?SearchArea="+SearchArea+"&keyword="+KeyWord+"";
//企业会员搜索
if(document.xabizsearch.SearchArea.value=="9")
location.href="/Company/search.asp?SearchArea="+SearchArea+"&keyword="+KeyWord+"";
return false;
}
//-->


//验证企业登陆框函数
function checkcompanylogin()
{
        if (Jtrim(document.myform.username.value)=='') {
                window.alert ("请输入您的会员名 ！")
                return false
        }
	    if (!isusername(document.myform.username.value)){
           return false;
        }
		if (Jtrim(document.myform.username.value).length<6||Jtrim(document.myform.username.value).length>20) {
            window.alert ("您的会员名需大于5位且不能超过20位！")
            return false
        }
		
        if (Jtrim(document.myform.password.value)=='') {
                window.alert ("请输入您的密码 ！")
                return false
        }
        if (Jtrim(document.myform.password.value).length<6||Jtrim(document.myform.password.value).length>20) {
                window.alert ("您的密码数需大于5位且不能超过20位！")
                return false
        }

   		if (document.myform.verifycode.value == "")
   		 {        
    		  alert("请输入验证码！");        
    		  document.myform.verifycode.focus();        
    		  return (false);        
   		 } 

        return true
}


//图片按比例缩放
var flag=false;
function DrawImage(ImgD,iwidth,iheight){
	//参数(图片,允许的宽度,允许的高度)
	var image=new Image();
	image.src=ImgD.src;
	if(image.width>0 && image.height>0){
		flag=true;
		if(image.width/image.height>= iwidth/iheight){
			if(image.width>iwidth){ 
				ImgD.width=iwidth;
				ImgD.height=(image.height*iwidth)/image.width;
			}else{
				ImgD.width=image.width; 
				ImgD.height=image.height;
			}
		}else{
			if(image.height>iheight){ 
				ImgD.height=iheight;
				ImgD.width=(image.width*iheight)/image.height; 
			}else{
				ImgD.width=image.width; 
				ImgD.height=image.height;
			}
		}
	}
}