var rotate_delay = 3000; // delay in milliseconds (5000 = 5 secs)
current = 0;

function delvisionnext() {
	if (document.delvisionslideform.delvisionslide[current+1]) {
		//document.images.delvisionshow.src = document.delvisionslideform.delvisionslide[current+1].value;
		var str = document.delvisionslideform.delvisionslide[current+1].value;
		document.images.delvisionshow.src = str;
		//document.links.delvisionpopup.href = "javascript:popUp('" + str.substring(0,34) + ".jpg',800,555)";
		if(current > 7) {
			document.getElementById('delvisionpopup').href = "javascript:popUp('" + str.substring(0,35) + ".jpg',800,555)";
		} else {
			document.getElementById('delvisionpopup').href = "javascript:popUp('" + str.substring(0,34) + ".jpg',800,555)";
		}
		document.delvisionslideform.delvisionslide.selectedIndex = ++current;
	}
	else delvisionfirst();
}

function delvisionprevious() {
	if (current-1 >= 0) {
		//document.images.delvisionshow.src = document.delvisionslideform.delvisionslide[current-1].value;
		var str = document.delvisionslideform.delvisionslide[current-1].value;
		document.images.delvisionshow.src = str;
		//document.links.delvisionpopup.href = "javascript:popUp('" + str.substring(0,34) + ".jpg',800,555)";
		if(current < 10) {
			document.getElementById('delvisionpopup').href = "javascript:popUp('" + str.substring(0,34) + ".jpg',800,555)";
		} else {
			document.getElementById('delvisionpopup').href = "javascript:popUp('" + str.substring(0,35) + ".jpg',800,555)";
		}
		document.delvisionslideform.delvisionslide.selectedIndex = --current;
   }
	else delvisionlast();
}

function delvisionfirst() {
	current = 0;
	//document.images.delvisionshow.src = document.delvisionslideform.delvisionslide[0].value;
	var str = document.delvisionslideform.delvisionslide[0].value;
	document.images.delvisionshow.src = str;
	//document.links.delvisionpopup.href = "javascript:popUp('" + str.substring(0,34) + ".jpg',800,555)";
	document.getElementById('delvisionpopup').href = "javascript:popUp('" + str.substring(0,34) + ".jpg',800,555)";
	document.delvisionslideform.delvisionslide.selectedIndex = 0;
}

function delvisionlast() {
	current = document.delvisionslideform.delvisionslide.length-1;
	//document.images.delvisionshow.src = document.delvisionslideform.delvisionslide[current].value;
	var str = document.delvisionslideform.delvisionslide[current].value;
	document.images.delvisionshow.src = str;
	//document.links.delvisionpopup.href = "javascript:popUp('" + str.substring(0,34) + ".jpg',800,555)";
	document.getElementById('delvisionpopup').href = "javascript:popUp('" + str.substring(0,35) + ".jpg',800,555)";
	document.delvisionslideform.delvisionslide.selectedIndex = current;
}

function delvisionap(text) {
	document.delvisionslideform.delvisionslidebutton.value = (text == document.delvisionslideform.hiddenstop.value) ? document.delvisionslideform.hiddenstart.value : document.delvisionslideform.hiddenstop.value;
	delvisionrotate();
}

function delvisionchange() { // Possibly not used
	//current = document.delvisionslideform.delvisionslide.selectedIndex;
	////document.images.delvisionshow.src = document.delvisionslideform.delvisionslide[current].value;
	//var str = document.delvisionslideform.delvisionslide[current].value;
	//document.images.delvisionshow.src = str;
	////document.links.delvisionpopup.href = "javascript:popUp('" + str.substring(0,34) + ".jpg',800,555)";
	//if(current > 8) {
	//	document.getElementById('delvisionpopup').href = "javascript:popUp('" + str.substring(0,35) + ".jpg',800,555)";
	//} else {
	//	document.getElementById('delvisionpopup').href = "javascript:popUp('" + str.substring(0,34) + ".jpg',800,555)";
	//}
}

function delvisionrotate() {
	if (document.delvisionslideform.delvisionslidebutton.value == document.delvisionslideform.hiddenstop.value) {
		current = (current == document.delvisionslideform.delvisionslide.length-1) ? 0 : current+1;
		//document.images.delvisionshow.src = document.delvisionslideform.delvisionslide[current].value;
		var str = document.delvisionslideform.delvisionslide[current].value;
		document.images.delvisionshow.src = str;
		//document.links.delvisionpopup.href = "javascript:popUp('" + str.substring(0,34) + ".jpg',800,555)";
		if(current > 8) {
			document.getElementById('delvisionpopup').href = "javascript:popUp('" + str.substring(0,35) + ".jpg',800,555)";
		} else {
			document.getElementById('delvisionpopup').href = "javascript:popUp('" + str.substring(0,34) + ".jpg',800,555)";
		}
		
		document.delvisionslideform.delvisionslide.selectedIndex = current;
		window.setTimeout("delvisionrotate()", rotate_delay);
   }
}