if(navigator.appVersion.charAt(0) >= 3) {
	var img = new Array();
	img[0] = new Image();
	img[0].src = "../images/globalnavi_company.gif";
	img[1] = new Image();
	img[1].src = "../images/globalnavi_company_over.gif";
	img[2] = new Image();
	img[2].src = "../images/globalnavi_it.gif";
	img[3] = new Image();
	img[3].src = "../images/globalnavi_it_over.gif";
	img[4] = new Image();
	img[4].src = "../images/globalnavi_attask.gif";
	img[5] = new Image();
	img[5].src = "../images/globalnavi_attask_over.gif";
}

function change_image(nam,num) {
	if(navigator.appVersion.charAt(0) >= 3) {
		document.images[nam].src = img[num].src;
	}
}

function openScreen(num) {
	newwin = window.open('screen_'+num+'.html', 'screenWindow', 'width=800,height=559,resizable=0,scrollbars=no');
	newwin.focus();
}