var imgcount = 0;

function nextSlide() {
	if(imgcount < (slides.length - 1)) {
  		changeStyle(imgcount, imgcount+1);  		
  		imgcount = imgcount + 1;  		
		slideChange(imgcount);
	} else {
		changeStyle(imgcount, 0);
		imgcount = 0;
		slideChange(0);		
	}
}	

function prevSlide() {
	if(imgcount > 0) {
  		changeStyle(imgcount, imgcount-1);  		
  		imgcount = imgcount - 1;
		slideChange(imgcount);
	}
}
	  
function slideChange(num) {
	document.getElementById('slide').innerHTML = '<a href="javascript:nextSlide();">'+slides[num]+'</a>';
	
	if(slides_text[num] != undefined) {
		document.getElementById('slide_txt').innerHTML = slides_text[num];
	} else {
		document.getElementById('slide_txt').innerHTML = '';
	}
	
	// oewa
	if(window.document.images.ivwpic1) {
		var oewaSrc = window.document.images.ivwpic1.src;
		oewaSrc = oewaSrc.substring (0, oewaSrc.indexOf('&d=')+3) + (new Date()).getTime();
		var img1 = new Image();
		img1.src = oewaSrc;
	}
	
	//var img1 = new Image();
	//if(window.document.images.ivwpic1) img1.src = window.document.images.ivwpic1.src;
	
	sitestat(SITESTAT);
}

function showSlide(num) {
	changeStyle(imgcount, num);
	imgcount = num;
	slideChange(imgcount);
}

function changeStyle(o, n) {
	tmp3 = document.getElementById('nav'+o);
	tmp3.className='txtnavi';
	tmp4 = document.getElementById('nav'+n);
	tmp4.className='txtnavi_act';
}

function showSubmenu(show) {
	tmp1 = document.getElementById('submenu'+cursubmenu);
	tmp1.style.display = 'none';
	tmp2 = document.getElementById('submenu'+show);
	tmp2.style.display = 'inline';	
	cursubmenu = show;
}