function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");

		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_off."))
			{
				images[i].onmouseover = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
				}
				images[i].onmouseout = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
				}
			}
		}
	}
}

if(window.addEventListener) {
	window.addEventListener("load", smartRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", smartRollover);
}

function preloadImages() {

    [

		'g_navi_home_on.jpg',

		'g_navi_service_on.jpg',

		'g_navi_case_on.jpg',

		'g_navi_company_on.jpg',

		'g_navi_recruit_on.jpg',

		'btn_case_list_on.jpg',


    ].each(function(image){ new Image().src = '/img/common/' + image; });

}

//
//	add function(s) for compatible previous version
//
window.onload = outline;
function outline (){
	var tgt = function (){ this.blur() };
	for (var i = 0; i < document.links.length; i++) {
		document.links[i].onfocus = tgt;
	}
}

function clickInputText(ele) {
	if (ele.value == ele.defaultValue) {
		ele.value = '';
	}
}

function submitForm(formName, id) {
	var form = document.getElementById(formName);
	var q = document.getElementById(id);
	if (q.value == '' || q.value == q.defaultValue) {
		alert('検索ワードを入力してください。');
		q.select();
		return false;
	}
	form.submit();
}