function check()
{
if(document.aspnetForm.ctl00$ContentPlaceHolder1$T1.value=="") {
    alert("Please input Company Name！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T1.focus();
	return false;}

   if(document.aspnetForm.ctl00$ContentPlaceHolder1$T7.value=="") {
    alert("Please input Work Phone！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T7.focus();
	return false;}
	
   if(document.aspnetForm.ctl00$ContentPlaceHolder1$T9.value=="") {
    alert("Please input Cell Phone！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T9.focus();
	return false;}
	
   if(document.aspnetForm.ctl00$ContentPlaceHolder1$T10.value=="") {
    alert("Please input Contact Person！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T10.focus();
	return false;}
	
	var sum=0;
	var items=document.getElementsByTagName("input");
	for(var i=0;i<items.length;i++)
	{
	    if(items[i].name.indexOf("ctl00$ContentPlaceHolder1$R1")!=-1 && items[i].type=="radio")
	    {
	        if(items[i].checked==true)
	        {
	            sum++;
	        }
	    }
	}
	if(sum==0){
	    alert("Social in China, Choose our service");
	    return false;
	}
	
	var sum1=0;
	var items1=document.getElementsByTagName("input");
	for(var j=0;j<items1.length;j++)
	{
	    if(items1[j].name.indexOf("ctl00$ContentPlaceHolder1$R2")!=-1 && items1[j].type=="radio")
	    {
	        if(items1[j].checked==true)
	        {
	            sum1++;
	        }
	    }
	}
	if(sum1==0){
	    alert("How Do You Know About Us? ");
	    return false;
	}
	

}