var isScrolling;

function scrollText(dir){
	isScrolling=true;
	doScroll(dir);
}

function doScroll(dir){
	if(isScrolling){
		if((contentTextDiv.y+dir<=0)&&(contentTextDiv.y+dir>=contentTextAreaDiv.h-contentTextDiv.getContentHeight())){
			contentTextDiv.moveTo(null,contentTextDiv.y+dir);
			//Grey out buttons when limit of scroll is reached
			/*
			if(contentTextDiv.y+dir>=0){
				roll('scrollUp','img/but_scroll_up_off.gif')
			}else{
				if(document.getElementById('scrollUp').src.indexOf('_up_on')==-1)roll('scrollUp','img/but_scroll_up_on.gif')
			}
			if(contentTextDiv.y+dir<=contentTextAreaDiv.h-contentTextDiv.getContentHeight()){
				roll('scrollDown','img/but_scroll_down_off.gif')
			}else{
				if(document.getElementById('scrollDown').src.indexOf('_down_on')==-1)roll('scrollDown','img/but_scroll_down_on.gif')
			}
			*/
			setTimeout('doScroll('+dir+')',25);
		}
	}
}

function cancelScroll(){
	isScrolling=false;
	return false;
}

var curImage=1;

function changeImage(num){
	roll('imageBut'+curImage,'img/image_blank_off.gif');
	curImage=num;
	roll('mainImage','img/'+largeImages[num]);
}

function rollOffBut(num){
	if(num!=curImage)roll('imageBut'+num,'img/image_blank_off.gif');
}

function Popup(src){
	this.src=src;
	this.show=showLargeImage;
}

function showLargeImage(){
	window.open('popups/'+this.src,'largeImageWin','width=720,height=448,status=no,scrolling=no,toolbar=no');
}