function Slide(URL,Direction,Explanation)
{
	this.URL=URL;
	this.Direction=Direction;
	this.Explanation=Explanation;
}
function ParseParms()
{
	var position=0;
	if(window.location.search != "")
	{
		position=window.location.search.substr(1,20) - 1;
		if (position >= Slidearray.length || position < 0)
			return(0)
		else	return (position);
	}
	else
		return(0);	
}
function horizontal()
{
	document.all.left.innerHTML="";
	document.all.right.innerHTML="";
	document.all.top.innerHTML="<img src='../gif/slidetop.gif' width='450' height='75' border='0' hspace='0' vspace='0' >";
	document.all.bottom.innerHTML="<img src='../gif/slidebottom.gif' width='450' height='75' border='0' hspace='0' vspace='0' >";
}
function vertical()
{
	document.all.left.innerHTML="<img src='../gif/slideleft.gif' width='75' height='450' border='0' hspace='0' vspace='0' >";
	document.all.right.innerHTML="<img src='../gif/slideright.gif' width='75' height='450' border='0' hspace='0' vspace='0' >";
	document.all.top.innerHTML="";
	document.all.bottom.innerHTML="";
}
function displayslide()
{
	document.all.explanation.innerHTML="<div class='small' style='position:relative; top:4px;'>" + Slidearray[Actualslide].Explanation + "</div>";
	if (Slidearray[Actualslide].Direction=="H")
	{
		horizontal();
		document.all.center.innerHTML="<img src='" + Slidearray[Actualslide].URL + "' width='450' height='300' border='0' hspace='0' vspace='0' >";
	}
	else 
	{	
		vertical();
		document.all.center.innerHTML="<img src='" + Slidearray[Actualslide].URL + "' width='300' height='450' border='0' hspace='0' vspace='0' >";
	}
	document.all.counter.innerHTML="<div class='small' style='position:relative; top:4px;'>of " + Slidearray.length + "</div>";
	document.Input.SearchFor.value=Actualslide+1;
}
function start()
{
	Actualslide=0;
	displayslide();
}
function end()
{
	Actualslide=Slidearray.length - 1;
	displayslide();
}
function forward()
{
	Actualslide++;
	if (Actualslide>=Slidearray.length)
		Actualslide=0;
	displayslide();
}
function fastforward()
{
	Actualslide=Actualslide+5;
	if (Actualslide>=Slidearray.length)
		Actualslide=Actualslide - Slidearray.length;
	displayslide();
}
function backward()
{
	Actualslide--;
	if (Actualslide<0)
		Actualslide=Slidearray.length - 1;
	displayslide();
}
function fastbackward()
{
	Actualslide=Actualslide-5;
	if (Actualslide<0)
		Actualslide=Actualslide + Slidearray.length;
	displayslide();
}
function readverifyjump()
{
	var chkZ = 1; 
	for(i=0;i < document.Input.SearchFor.value.length; ++i) 
		if(document.Input.SearchFor.value.charAt(i) < "0" || document.Input.SearchFor.value.charAt(i) > "9")
			chkZ = -1; 
	if(	chkZ == -1 ||
		document.Input.SearchFor.value > Slidearray.length ||
		document.Input.SearchFor.value == 0)
	{ 
		alert("Please enter the image number to jump to.\nMake sure that the number is not higher than the maximum number of slides"); 
		document.Input.SearchFor.focus();
		document.Input.SearchFor.value=Actualslide+1;
	}
	else 
	{
		Actualslide=document.Input.SearchFor.value-1;
		displayslide();
	}
}