current = 0;
function first() {
	current = 0;
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById('placeholder').src = document.slideList.slide[0].value;
		document.slideList.slide.selectedIndex = ++current;
	} 
	else { 
		if (document.layers) { // Netscape 4
			document.layers['placeholder'].src = document.slideList.slide[0].value;
			document.slideList.slide.selectedIndex = ++current;
		} 
		else { // IE 4 
			document.all.layers['placeholder'].src = document.slideList.slide[0].value;
			document.slideList.slide.selectedIndex = ++current;
		}
	}
	document.slideList.slide.selectedIndex = 0;	
}
function last() {
	current = document.slideList.slide.length-1;
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById('placeholder').src = document.slideList.slide[current].value;
	} 
	else { 
		if (document.layers) { // Netscape 4
			document.layers['placeholder'].src = document.slideList.slide[current].value;
		} 
		else { // IE 4 
			document.all.layers['placeholder'].src = document.slideList.slide[current].value;
		}
	}
document.slideList.slide.selectedIndex = current;	
}
function next() {
	if (document.slideList.slide[current+1]) {
		if (document.getElementById) { // DOM3 = IE5, NS6
			document.getElementById('placeholder').src = document.slideList.slide[current+1].value;
			document.slideList.slide.selectedIndex = ++current;
		} 
		else { 
			if (document.layers) { // Netscape 4
				document.layers['placeholder'].src = document.slideList.slide[current+1].value;
				document.slideList.slide.selectedIndex = ++current;
			} 
			else { // IE 4 
				document.all.layers['placeholder'].src = document.slideList.slide[current+1].value;
				document.slideList.slide.selectedIndex = ++current;
			}
		}
	}
	else first();
}
function prev() {
	if (current-1 >= 0) {
		if (document.getElementById) { // DOM3 = IE5, NS6
			document.getElementById('placeholder').src = document.slideList.slide[current-1].value;
			document.slideList.slide.selectedIndex = --current;
		} 
		else { 
			if (document.layers) { // Netscape 4
				document.layers['placeholder'].src = document.slideList.slide[current-1].value;
				document.slideList.slide.selectedIndex = --current;
			} 
			else { // IE 4 
				document.all.layers['placeholder'].src = document.slideList.slide[current-1].value;
				document.slideList.slide.selectedIndex = --current;
			}
		}
	}
	else last();
}
function goto(link_href) {
	current = -1;
	do {
		current = current + 1;
	}
	while (link_href != document.slideList.slide[current].value);
	current = current;
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById('placeholder').src = document.slideList.slide[current].value;
		document.getElementById('popper').style.display = 'block';
	} 
	else { 
		if (document.layers) { // Netscape 4
			document.layers['placeholder'].src = document.slideList.slide[current].value;
			document.layers['popper'].display = 'block';
		} 
		else { // IE 4 
			document.all.layers['placeholder'].src = document.slideList.slide[current].value;
			document.all.layers['popper'].style.display = 'block';
		}
	}
	document.slideList.slide.selectedIndex = current;	
}

function hidePic() {
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById('popper').style.display = 'none';
		document.getElementById('placeholder').src = '';
	} 
	else { 
		if (document.layers) { // Netscape 4
			document.layers['popper'].display = 'none';
			document.layers['placeholder'].src = '';	
		} 
		else { // IE 4 
			document.all.layers['popper'].style.display = 'none';
			document.all.layers['placeholder'].src = '';
		} 
	} 
}