var numslides=32;
var screenslides=8;
var currentslide=0;
var firstslide=0;
function ShowLarge(parm1) {
	//take image clicked on and show large version of img
	var imgElement = this;
	var currentLargeimg = document.getElementById("largeimg");
	currentLargeimg.src="images/loading.gif";
	currentLargeimg.src=parm1.substring(0,parm1.length-9)+"full.jpg"; //-9 is to remove "thumbs.jpg"
	//currentLargeimg.src=imgElement.src;
} // end Showlarge()
function NextEight(parm1) {
	firstslide+=8;
	if (firstslide+1>numslides-screenslides){
		firstslide=numslides-screenslides; //Don't go past the end
		document.getElementById("next").src="images/rightarrowgrayed.png";
	}
	document.getElementById("previous").src="images/leftarrow.png";
	document.getElementById("image0").src=parm1.substring(0,parm1.lastIndexOf("_")+1)+String(firstslide+1)+"thumb.jpg"
	document.getElementById("image1").src=parm1.substring(0,parm1.lastIndexOf("_")+1)+String(firstslide+2)+"thumb.jpg"
	document.getElementById("image2").src=parm1.substring(0,parm1.lastIndexOf("_")+1)+String(firstslide+3)+"thumb.jpg"
	document.getElementById("image3").src=parm1.substring(0,parm1.lastIndexOf("_")+1)+String(firstslide+4)+"thumb.jpg"
	document.getElementById("image4").src=parm1.substring(0,parm1.lastIndexOf("_")+1)+String(firstslide+5)+"thumb.jpg"
	document.getElementById("image5").src=parm1.substring(0,parm1.lastIndexOf("_")+1)+String(firstslide+6)+"thumb.jpg"
	document.getElementById("image6").src=parm1.substring(0,parm1.lastIndexOf("_")+1)+String(firstslide+7)+"thumb.jpg"
	document.getElementById("image7").src=parm1.substring(0,parm1.lastIndexOf("_")+1)+String(firstslide+8)+"thumb.jpg"
	
}
function PrevEight(parm1) {
	firstslide-=8;
	if (firstslide<=0){
		firstslide=0; //Don't go before the first slide (slide0)
		document.getElementById("previous").src="images/leftarrowgrayed.png";
	}
	document.getElementById("next").src="images/rightarrow.png";
	document.getElementById("image0").src=parm1.substring(0,parm1.lastIndexOf('_')+1)+String(firstslide+1)+"thumb.jpg"
	document.getElementById("image1").src=parm1.substring(0,parm1.lastIndexOf('_')+1)+String(firstslide+2)+"thumb.jpg"
	document.getElementById("image2").src=parm1.substring(0,parm1.lastIndexOf('_')+1)+String(firstslide+3)+"thumb.jpg"
	document.getElementById("image3").src=parm1.substring(0,parm1.lastIndexOf('_')+1)+String(firstslide+4)+"thumb.jpg"
	document.getElementById("image4").src=parm1.substring(0,parm1.lastIndexOf('_')+1)+String(firstslide+5)+"thumb.jpg"
	document.getElementById("image5").src=parm1.substring(0,parm1.lastIndexOf('_')+1)+String(firstslide+6)+"thumb.jpg"
	document.getElementById("image6").src=parm1.substring(0,parm1.lastIndexOf('_')+1)+String(firstslide+7)+"thumb.jpg"
	document.getElementById("image7").src=parm1.substring(0,parm1.lastIndexOf('_')+1)+String(firstslide+8)+"thumb.jpg"
}