function selectjyLayer(i)//精英
{
switch(i)
{
case 1:
document.getElementById("jy1").style.display="block";document.getElementById("jyli1").className="dtitle1";
document.getElementById("jy2").style.display="none";document.getElementById("jyli2").className="dtitle2";
break;
case 2:
document.getElementById("jy1").style.display="none";document.getElementById("jyli1").className="dtitle2";
document.getElementById("jy2").style.display="block";document.getElementById("jyli2").className="dtitle1";
break;
}
}
function selectxwLayer(i)//新闻
{
switch(i)
{
case 1:
document.getElementById("xw1").style.display="block";document.getElementById("xwli1").className="dtitle1";
document.getElementById("xw2").style.display="none";document.getElementById("xwli2").className="dtitle2";
document.getElementById("xw3").style.display="none";document.getElementById("xwli3").className="dtitle2";
break;
case 2:
document.getElementById("xw1").style.display="none";document.getElementById("xwli1").className="dtitle2";
document.getElementById("xw2").style.display="block";document.getElementById("xwli2").className="dtitle1";
document.getElementById("xw3").style.display="none";document.getElementById("xwli3").className="dtitle2";
break;
case 3:
document.getElementById("xw1").style.display="none";document.getElementById("xwli1").className="dtitle2";
document.getElementById("xw2").style.display="none";document.getElementById("xwli2").className="dtitle2";
document.getElementById("xw3").style.display="block";document.getElementById("xwli3").className="dtitle1";
break;
}
}
function selecthLayer(i)//推荐公司、产品、文章
{
switch(i)
{
case 1:
document.getElementById("h1").style.display="block";document.getElementById("hli1").className="htitle1";
document.getElementById("h2").style.display="none";document.getElementById("hli2").className="htitle2";
break;
case 2:
document.getElementById("h1").style.display="none";document.getElementById("hli1").className="htitle2";
document.getElementById("h2").style.display="block";document.getElementById("hli2").className="htitle3";
break;
}
}
function selectzhLayer(i)//展会
{
switch(i)
{
case 1:
document.getElementById("zh1").style.display="block";document.getElementById("zhli1").className="dtitle1";
document.getElementById("zh2").style.display="none";document.getElementById("zhli2").className="dtitle2";
break;
case 2:
document.getElementById("zh1").style.display="none";document.getElementById("zhli1").className="dtitle2";
document.getElementById("zh2").style.display="block";document.getElementById("zhli2").className="dtitle1";
break;
}
}
function selectwzLayer(i)//文摘
{
switch(i)
{
case 1:
document.getElementById("wz1").style.display="block";document.getElementById("wzli1").className="dtitle1";
document.getElementById("wz2").style.display="none";document.getElementById("wzli2").className="dtitle2";
break;
case 2:
document.getElementById("wz1").style.display="none";document.getElementById("wzli1").className="dtitle2";
document.getElementById("wz2").style.display="block";document.getElementById("wzli2").className="dtitle1";
break;
}
}
function selectpxLayer(i)//培训、研讨会
{
switch(i)
{
case 1:
document.getElementById("px1").style.display="block";document.getElementById("pxli1").className="dtitle1";
document.getElementById("px2").style.display="none";document.getElementById("pxli2").className="dtitle2";
break;
case 2:
document.getElementById("px1").style.display="none";document.getElementById("pxli1").className="dtitle2";
document.getElementById("px2").style.display="block";document.getElementById("pxli2").className="dtitle1";
break;
}
}
function selectbkLayer(i)//blog
{
switch(i)
{
case 1:
document.getElementById("bk1").style.display="block";document.getElementById("bkli1").className="dtitle1";
document.getElementById("bk2").style.display="none";document.getElementById("bkli2").className="dtitle2";
break;
case 2:
document.getElementById("bk1").style.display="none";document.getElementById("bkli1").className="dtitle2";
document.getElementById("bk2").style.display="block";document.getElementById("bkli2").className="dtitle1";
break;
}
}

function checkdata() {
if( qk.qkemail.value =="请填写Email" ) {
alert("\请填写Email地址！");
document.qk.qkemail.focus();
return false;
}
if( isNumberString(qk.qkemail.value,"1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_@.-")!=1 || 
qk.qkemail.value.length<8) {
alert("\您填写的邮箱格式有误,请从新填写!");
document.qk.qkemail.focus();
return false;
}
}
function isNumberString (InString,RefString)
{
if(InString.length==0) return (false);
for (Count=0; Count < InString.length; Count++)  {
	TempChar= InString.substring (Count, Count+1);
	if (RefString.indexOf (TempChar, 0)==-1)  
	return (false);
}
return (true);
}