function searchbox(){
	document.write('<form name="ItemData" id="ItemData" class="searchForm" method="post" action="#" onsubmit="return false">');
	document.write('<div>');
	document.write('<input type="text" id="kw" name="kw" class="text" value="サイト内検索" tabindex="2" maxlength="150" style="margin-right: 4px;" onclick="javascript:searchboxclick();" onfocus="javascript:searchboxclick();" />');
	document.write('<input type="button" class="btn" value="検索" accesskey="G" tabindex="3" onclick="javascript:searchcheck();" onkeypress="javascript:searchcheck();" />');
	document.write('</div>');
	document.write('</form>');
}

function searchcheck(){
	k = document.ItemData.kw.value;
	if(k.length>1){
		kw = encodeURI(k);
		location.href="http://www.tokaiopt.jp/lens/search.php?" + kw;
	}
}

function searchboxclick(){
	k = document.ItemData.kw.value;
	if(k=="サイト内検索"){
		document.ItemData.kw.value="";
	}
}