function searchKeyword(){
	var url  = "";
	var host_uri = document.getElementById("host_uri_id").value ;
	var type = document.getElementById("search_type").value ;
	var form = document.getElementById("search_keyword_form") ;
	var searchkeyword = document.getElementById("search_keyword").value ;
		searchkeyword = searchkeyword.replace(/(^\s*)|(\s*$)/g,"");
	if (searchkeyword=="" || searchkeyword.length<1 ){
		document.getElementById("search_keyword").value = searchkeyword;
		var china_lang = document.getElementById("hidden_lang_china").value;
		if ( china_lang ){
			alert('请输入关键字!');
		}else{
			alert('キーワードをご入力ください!');
		}
		return false;
	}
	switch(type){
	case "1":
		url = host_uri+"products/search.php";
	break ;
	case "2":
		url = host_uri+"vipservices/search.php";
	break ;
	case "3":
		url = host_uri+"companies/search.php";	
	break ;
	default:
		url  = host_uri+"products/search.php";
	break;		
	}
	document.search_keyword_form.action = url ;
	document.search_keyword_form.submit();
	return true ;
}

//显示或隐藏次行业
function show_sub(main_cat_id){
		var array_main_cat_id = document.getElementsByName('array_main_cat_id[]');
		for (var i=0;i<array_main_cat_id.length ;i++ ){
				document.getElementById('sub_'+array_main_cat_id[i].value).style.display="none";
		}
		document.getElementById('sub_'+main_cat_id).style.display='block';
}
//显示或隐藏次行业
function close_sub(){
		var array_main_cat_id = document.getElementsByName('array_main_cat_id[]');
		for (var i=0;i<array_main_cat_id.length ;i++ ){
				document.getElementById('sub_'+array_main_cat_id[i].value).style.display="none";
		}
}
//显示大图片
function showMaxPicturePreview(imgObj,imgTitle,imgSrc,linkURL,imgWidth,imgHeight,bigWidthHeigth) {
	var show_max_picture_preview = document.getElementById('show_max_picture_preview_'+imgObj);
	var width = height = bigWidthHeigth ;
	var new_width = new_height = 0 ;
	if ( imgWidth<=width && imgHeight<=height ){
		new_width  = imgWidth ;
		new_height = imgHeight ;
	}else{
		if ( imgWidth > imgHeight ) {
			pic_ratio = imgWidth / width;
		}else{
			pic_ratio = imgHeight / height;
		}
		new_width  = Math.max(imgWidth /pic_ratio) ;
		new_height = Math.max(imgHeight/pic_ratio) ;
	}


	var innerHTML = '<a href="' + linkURL + '" target="_blank" title="'+imgTitle+'"><img alt="'+imgTitle+'" border="0" src="' + imgSrc + '" ';
	if (new_width!=0){
		innerHTML+=' width="' + new_width + '"';	
	}
	if (new_height!=0){
		innerHTML+=' height="' + new_height + '"';	
	}
	innerHTML+=' onMouseOut="hiddenMaxPicturePreview(\''+imgObj+'\')"></a>';
	show_max_picture_preview.innerHTML=innerHTML;

}
//隐藏大图片
function hiddenMaxPicturePreview(imgObj) {
	var show_max_picture_preview = document.getElementById('show_max_picture_preview_'+imgObj);
	show_max_picture_preview.innerHTML='';
}