var sle;
function slideact(way) {
	if (!sle) {
		sle = document.getElementById('slideViewInner');
		sle.w = document.getElementById('slideView').offsetWidth;
		var sldiv = sle.getElementsByTagName('div');
		var slc = 0;
		for (i=0; i<sldiv.length; i++){
			if (sldiv[i].parentNode.id == 'slideViewInner') slc++;
		}
		sle.c = slc;
		sle.m = 0;
		sle.n = 0;
		sle.style.left = 0;
	} else if (sle.a) {
		return;
	}

	sle.a = way;
	if (way == 'back') {
		sle.n--;
	} else if (way == 'next') {
		sle.n++;
	}
	sle.t = setTimeout('slidemove()', 1);
}
function slidemove() {
	clearTimeout(sle.t);
	var intl = Number(sle.style.left.replace(/[^0-9\-]/g, ''));
	if (sle.a == 'back') {
		sle.m = sle.m + 30;
		intl = intl + 30;
		sle.style.left =  intl + 'px';
	} else if (sle.a == 'next') {
		sle.m = sle.m + 30;
		intl = intl - 30;
		sle.style.left =  intl + 'px';
	}
	if (sle.m >= sle.w) {
		sle.a = 0;
		sle.m = 0;
		if (sle.n === 0) {
			document.getElementById('slideBackBtn').style.visibility = 'hidden';
		} else {
			document.getElementById('slideBackBtn').style.visibility = 'visible';
		}
		if (sle.n >= sle.c - 1) {
			document.getElementById('slideNextBtn').style.visibility = 'hidden';
		} else {
			document.getElementById('slideNextBtn').style.visibility = 'visible';
		}
	} else {
		sle.t = setTimeout('slidemove()', 1);
	}
}