function messageForm(elementName,value){

	if (elementName == 'message_company') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">会社名をご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_busyo') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">所属部署をご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_namae') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">お名前をご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_furigana') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">お名前のフリガナをご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_zipa') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">半角数字3桁でご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_zipb') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">半角数字4桁でご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_addrb') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">都道府県の後をご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_addrc') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">アパート、マンション、部屋番号等をご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_tela') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">半角文字でご記入ください。(例) 03-1234-5678</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_fax') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">半角文字でご記入ください。(例) 03-1234-5678</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_email') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">半角文字でご記入ください。(例) foo@bar.com</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_receivername') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">送り先名をご記入ください。発送先が上記と同じ場合は記入不要です。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_receiverfurigana') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">送り先名のフリガナをご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_receiverzipa') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">半角数字3桁でご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_receiverzipb') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">半角数字4桁でご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_receiveraddrb') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">都道府県の後をご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_receiveraddrc') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">アパート、マンション、部屋番号等をご記入ください。</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	} else if (elementName == 'message_receivertela') {
		if(value == true){
			document.getElementById(elementName).innerHTML = "<br /><font color=\"gray\">半角文字でご記入ください。(例) 03-1234-5678 , (03)1234-5678</font>";
		} else {
			document.getElementById(elementName).innerHTML = "";
		}
	}

}