function checkEmail(){
     var mail = document.form1.E_MAIL.value;
	 if(!isEmailValid(mail)){

        alert('InValid mail address. Please input the mail address');
                document.form1.E_MAIL.focus();
     }

}

function trim(str){
        var len = str.length;
        for ( i=len; i > 0; i--){
                if (str.charAt(i-1) == ' ')
                        str = str.substring(0, i-1);
                else return str;
        }
        return str;
}

function isNumber(check){
	var c;

    c = check.charAt(0);
	if( !( (c >= '0' && c <= '9')) )
	return false;

	for(i=1; i<check.length; i++){
       c = check.charAt(i);

       if( !( (c >= '0' && c <= '9')) )
	   return false;
	}

	return true;
}

/**
function isEmailValid(mail)
{
	var check = 1;
	var check1 = 1;
	var cont = 0;
	var c;

	if( mail == "" )
		return true;

	c = mail.charAt(0);
	if( !( (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') ||
		   (c == '-')
	     ) )
		return false;

	c = mail.charAt(mail.length-1 );
	if( !( (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')) )
		return false;

	for(i=1; i<mail.length; i++)
	{
		c = mail.charAt(i);
		if( !((c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')) )
		{
			if(c == '.' || c == '-' || c == '_' )
			{
				if(cont==1)
					return false;
				else
					check++ ;
			}
			else if( c == '@')
			{
				if( check1 == 5 )
					return false;
				else
					check1 =5;
				cont=1;
			}
			else
			{
				return false;
			}
		}
		else
			cont = 0;
	}

	if( check == 1 ||  check1 == 1)
		return false;

	return true;
}
**/

function isEmailValid(strMail)
{
	/** üũ»çÇ×
     - @°¡ 2°³ÀÌ»óÀÏ °æ¿ì
     - .ÀÌ ºÙ¾î¼­ ³ª¿À´Â °æ¿ì
     -  @.³ª  .@ÀÌ Á¸ÀçÇÏ´Â °æ¿ì
     - ¸ÇóÀ½ÀÌ.ÀÎ °æ¿ì
     - @ÀÌÀü¿¡ ÇϳªÀÌ»óÀÇ ¹®ÀÚ°¡ ÀÖ¾î¾ß ÇÔ
     - @°¡ ÇϳªÀÖ¾î¾ß ÇÔ
     - Domain¸í¿¡ .ÀÌ Çϳª ÀÌ»ó ÀÖ¾î¾ß ÇÔ
     - Domain¸íÀÇ ¸¶Áö¸· ¹®ÀÚ´Â ¿µ¹®ÀÚ 2~4°³À̾î¾ß ÇÔ **/

    var check1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/;

    var check2 = /^[a-zA-Z0-9\-\.\_]+\@[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4})$/;

    if ( !check1.test(strMail) && check2.test(strMail) ) {
        return true;
    } else {
        return false;
    }
}

function checkLength( check_name , v_size, message){

	 var checkmsg = eval('document.form1.'+check_name+'.value');
	 if(checkmsg.length > v_size){
         alert(message);
         return;

		 eval('document.form1.'+check_name+'.value.focus()');
	 }
}

function goSubmit() {
    var dForm = document.form1;

/*
FIRST_NAME
LAST_NAME
CONTENT
*/
	var dfirst_name = dForm.FIRST_NAME.value;
	var dlast_name = dForm.LAST_NAME.value;
	var dcontent = dForm.CONTENT.value;

	for(;dfirst_name.indexOf(" ")!= -1;)
    {
     dfirst_name = dfirst_name.replace(' ','');
    }

	for(;dlast_name.indexOf(" ")!= -1;)
    {
     dlast_name = dlast_name.replace(' ','');
    }

	for(;dcontent.indexOf(" ")!= -1;)
    {
     dcontent = dcontent.replace(' ','');
    }

	/*if(dForm.PROD_CHECK.value == -1){
       if(dForm.PROD_ID.value == '' || dForm.PROD_ID.value == null){
       alert('To select the product id.');
       return;
       }
	}*/

	if(dForm.IS_PROD.value =='Y'){

		if(dForm.MODEL_ID.value == '' || dForm.MODEL_ID.value == null){

		   alert('Please select the model.');
		   dForm.MODEL_ID.focus();
		   return;

		}

//		dForm.MODEL_NAME.value = dForm.MODEL_ID.options[dForm.MODEL_ID.options.selectedIndex].innerText;
		dForm.MODEL_NAME.value = dForm.MODEL_ID.options[dForm.MODEL_ID.options.selectedIndex].text;


		if(dForm.QST_TYPE.value == '' || dForm.QST_TYPE.value == null){

		   alert('Please select the question type.');
           dForm.QST_TYPE.focus();
		   return;

		}

//		dForm.QST_NAME.value = dForm.QST_TYPE.options[dForm.QST_TYPE.options.selectedIndex].innerText;
		dForm.QST_NAME.value = dForm.QST_TYPE.options[dForm.QST_TYPE.options.selectedIndex].text;

		if(dForm.PROD_USE_1.value == 'Y' && dForm.PROD_ESS_1.value == 'Y'){
		   if(dForm.PROD_INFO1.value == '' || dForm.PROD_INFO1.value == null){
		   var name1 = dForm.FIELD_NAME_1.value;
		   alert('Please input the'+name1);
		   dForm.PROD_INFO1.focus();
		   return;
		   }
		}

		if(dForm.PROD_USE_2.value == 'Y' && dForm.PROD_ESS_2.value == 'Y'){
		   if(dForm.PROD_INFO2.value == '' || dForm.PROD_INFO2.value == null){
		   var name2 = dForm.FIELD_NAME_2.value;
		   alert('Please input the'+name2);
		   dForm.PROD_INFO2.focus();
		   return;
		   }
		}

		if(dForm.PROD_USE_3.value == 'Y' && dForm.PROD_ESS_3.value == 'Y'){
		   if(dForm.PROD_INFO3.value == '' || dForm.PROD_INFO3.value == null){
		   var name3 = dForm.FIELD_NAME_3.value;
		   alert('Please input the'+name3);
		   dForm.PROD_INFO3.focus();
		   return;
		   }
		}

		if(dForm.PROD_USE_4.value == 'Y' && dForm.PROD_ESS_4.value == 'Y'){
		   if(dForm.PROD_INFO4.value == '' || dForm.PROD_INFO4.value == null){
		   var name4 = dForm.FIELD_NAME_4.value;
		   alert('Please input the'+name4);
		   dForm.PROD_INFO4.focus();
		   return;
		   }
		}

		if(dForm.PROD_USE_4.value == 'Y' && dForm.PROD_ESS_5.value == 'Y'){
		   if(dForm.PROD_INFO5.value == '' || dForm.PROD_INFO5.value == null){
		   var name5 = dForm.FIELD_NAME_5.value;
		   alert('Please input the'+name5);
		   dForm.PROD_INFO5.focus();
		   return;
		   }
		}

	}

	/*if(dForm.SN.value == '' || dForm.SN.value == null){

        alert('To input the serial number.');

        return;

	}*/

	/*if(dForm.DAY.value == '' || dForm.DAY.value == null){

        alert('To select the purchase day.');

        return;

	}



	if(dForm.MONTH.value == '' || dForm.MONTH.value == null){

        alert('To select the purchase month.');

        return;

	}



	if(dForm.YEAR.value == '' || dForm.YEAR.value == null){

        alert('To select the purchase year.');

        return;

	}*/

    if(dForm.USE_1.value == 'Y' && dForm.ESS_1.value == 'Y'){

	if(dfirst_name == '' || dfirst_name == null){

        alert('Please input the first name.');
        dForm.FIRST_NAME.focus();
        return;

	}}



    if(dForm.USE_2.value == 'Y' && dForm.ESS_2.value == 'Y'){

	if(dlast_name == '' || dlast_name == null){

        alert('Please input the last name');
        dForm.LAST_NAME.focus();
        return;

	}}



	if(dForm.USE_3.value == 'Y' && dForm.ESS_3.value == 'Y'){


	if(dForm.E_MAIL.value == '' || dForm.E_MAIL.value == null){

        alert('Please input the mail address');
        dForm.E_MAIL.focus();
        return;

	}else if (!isEmailValid(dForm.E_MAIL.value))
	{
		  alert('InValid mail address. Please input the mail address');
		  dForm.E_MAIL.focus();
        return;
	}
	}



	if(dForm.USE_4.value == 'Y' && dForm.ESS_4.value == 'Y'){

	if(dForm.COUNTRY.value == '' || dForm.COUNTRY.value == null){

        alert('Please select the country.');
		dForm.COUNTRY.focus();

        return;

	}}

    if(dForm.USE_13.value == 'Y'){
		if(dForm.AREA.value != ''){
		if(!isNumber(dForm.AREA.value)){

			 alert('Please input the area with number.');
             dForm.AREA.focus();
			 return;
		}}
	}

	if(dForm.USE_14.value == 'Y'){
		if(dForm.PHONE.value != ''){
		if(!isNumber(dForm.PHONE.value)){

			 alert('Please input the phone with number');
              dForm.PHONE.focus();
			 return;
		}}
	}

	if(dForm.USE_15.value == 'Y'){
		if(dForm.FAX.value != ''){
		if(!isNumber(dForm.FAX.value)){

			 alert('Please input the fax with number.');
             dForm.FAX.focus();
			 return;
		}}
	}


	if(dForm.USE_5.value == 'Y' && dForm.ESS_5.value == 'Y'){

	if(trim(dForm.SUBJECT.value) == '' || trim(dForm.SUBJECT.value) == null){

        alert('Please input the subject.');
        dForm.SUBJECT.focus();
        return;

	}}



	if(dForm.USE_6.value == 'Y' && dForm.ESS_6.value == 'Y'){

	if(dcontent == '' || dcontent == null){

        alert('Please input the content.');
        dForm.CONTENT.focus();
        return;

	}}



	if(dForm.USE_9.value == 'Y' && dForm.ESS_9.value == 'Y'){

	if(dForm.ADDRESS.value == '' || dForm.ADDRESS.value == null){

        alert('Please input the address.');
        dForm.ADDRESS.focus();
        return;

	}}



	if(dForm.USE_10.value == 'Y' && dForm.ESS_10.value == 'Y'){

	if(dForm.ZIP_CODE.value == '' || dForm.ZIP_CODE.value == null){

        alert('Please input the zip code.');
        dForm.ZIP_CODE.focus();
        return;

	}}

	if(dForm.USE_10.value == 'Y'){
		if(dForm.ZIP_CODE.value != ''){
		if(!isNumber(dForm.ZIP_CODE.value)){

			 alert('Please input the postal code with number.');
             dForm.ZIP_CODE.focus();
			 return;
		}}
	}



	if(dForm.USE_11.value == 'Y' && dForm.ESS_11.value == 'Y'){

	if(dForm.CITY.value == '' || dForm.CITY.value == null){

        alert('Please input the city.');
        dForm.CITY.focus();
        return;

	}}



	if(dForm.USE_12.value == 'Y' && dForm.ESS_12.value == 'Y'){

	if(dForm.STATE.value == '' || dForm.STATE.value == null){

        alert('Please input the state.');
        dForm.STATE.focus();
        return;

	}}



	if(dForm.USE_13.value == 'Y' && dForm.ESS_13.value == 'Y'){

	if(dForm.AREA.value == '' || dForm.AREA.value == null){

        alert('Please input the area.');
        dForm.AREA.focus();
        return;

	}
	}



	if(dForm.USE_14.value == 'Y' && dForm.ESS_14.value == 'Y'){

	if(dForm.PHONE.value == '' || dForm.PHONE.value == null){

        alert('Please input the phone number.');
        dForm.PHONE.focus();
        return;

	}}



	if(dForm.USE_15.value == 'Y' && dForm.ESS_15.value == 'Y'){

	if(dForm.FAX.value == '' || dForm.FAX.value == null){

        alert('Please input the fax number.');
        dForm.FAX.focus();
        return;

	}}



	if(dForm.USE_16.value == 'Y' && dForm.ESS_16.value == 'Y'){

	if(dForm.COMPANY.value == '' || dForm.COMPANY.value == null){

        alert('Please input the company/organization.');
        dForm.COMPANY.focus();
        return;

	}}

	if(dForm.USE_17.value == 'Y' && dForm.ESS_17.value == 'Y'){

	if(dForm.TITLE.value == '' || dForm.TITLE.value == null){

        alert('Please input the title');
        dForm.TITLE.focus();
        return;

	}}

    var count = dForm.CHECK_COUNT.value ;

	count = count + 1;

	if(count > 1){

           alert('Sending mail.');

	}else{
	     dForm.CHECK_COUNT.value = count;
	     dForm.submit();
	}
}