function check_input(form){

if (form.company_name.value=="") 
{alert("Please insert your company name");
form.company_name.focus();
return;}

if(form.year_established.value=="")
{alert("Please insert your company establish time");
form.year_established.focus();
return;}

if (form.address.value=="") 
{alert("Please insert your company address!");
form.address.focus();
return;}

if (navigator.appName=="Microsoft Internet Explorer"){
if (form.country.value=="no") 
{alert("Please select your country!");
form.country.focus();
return;}}

if (form.phone_no.value=="")
{alert("Please insert contact telephone!");
form.phone_no.focus();
return;}

if (form.fax.value=="")
{alert("Please insert Fax code");
form.fax.focus();
return;}

if (form.email.value=="")
{alert("Please insert your email address!");
form.email.focus();
return;}

if (form.email.value.indexOf('@',0)==-1 ||form.email.value.indexOf('.',0)==-1) {
alert("Your email address is incorrect!");
form.email.focus();
return ;}

if (form.contact_person.value=="")
{alert("Please insert contact person name!");
form.contact_person.focus();
return;}

//***
if (navigator.appName=="Microsoft Internet Explorer"){
if (form.business.value=="no")
{alert("Please select types of business!");
form.business.focus();
return;}
if (form.business.value=="others"){
if (form.others_bui_specify.value=="")
{alert("Please specify types of business!");
form.others_bui_specify.focus();
return;}}
if (form.business.value=="directmarketing"){
if (form.others_bui_specify.value=="")
{alert("Please specify directmarketing!");
form.others_bui_specify.focus();
return;}}}
//***

if (form.main_products.value=="") 
{alert("Please insert your company main products!");
form.main_products.focus();
return;}

//**
if (navigator.appName=="Microsoft Internet Explorer"){

if (form.employees.value=="no")
{alert("Please select your number of employees!");
form.employees.focus();
return;}

if (form.salesvolume.value=="no")
{alert("Please select your yearly sales volumne");
form.salesvolume.focus();
return;}

if (form.customer_type.value=="no")
{alert("Please select  major types of customers of your company!");
form.customer_type.focus();
return;}

if (form.customer_type.value=="others")
{if (form.other_customer_type.value=="")
{alert("Please specify  major types of customers of your company!");
form.other_customer_type.focus();
return};}

if (form.major_supplies_name1.value!="")
{if (form.major_supplies_country1.value=="no")
{alert("Please select the supplier's country!");
form.major_supplies_country1.focus();
return}}

if (form.major_supplies_name2.value!="")
{if (form.major_supplies_country2.value=="no")
{alert("Please select the supplier's country!");
form.major_supplies_country2.focus();
return}}

if (form.major_supplies_name3.value!="")
{if (form.major_supplies_country3.value=="no")
{alert("Please select the supplier's country!");
form.major_supplies_country3.focus();
return}}
}
//**
form.submit()
}
function check(form){
if (navigator.appName=="Microsoft Internet Explorer"){
if (form.message.value=="no") 
{alert("Please choose one kind of comment which you would like to send !");
form.message.focus();
return;}
if (form.subject.value=="no") 
{alert("Please choose one kind of comment!");
form.subject.focus();
return;}
if (form.subject.value=="(other)")
{if (form.SubjectOther.value=="")
{alert("Please specify your other comment!");
form.SubjectOther.focus();
return};}
}
if (form.Username.value=="")
{alert("Please insert your name!");
form.Username.focus();
return;}
if (form.email.value=="")
{alert("Please insert your email address!");
form.email.focus();
return;}
if (form.email.value.indexOf('@',0)==-1 ||form.email.value.indexOf('.',0)==-1) {
alert("Your email address is incorrect!");
form.email.focus();
return ;}
form.submit()
}
function MM_jumpMenu(targ,selObj,restore)
{if (selObj.options[selObj.options.selectedIndex].value=="cust_logon.asp"){
  //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
}