function rollOn(imgName){
	if (document.images){
		document[imgName].src=eval(imgName + "_on.src");
	}
}

function rollOff(imgName){
	if (document.images){
		document[imgName].src=eval(imgName + "_off.src");
	}
}

	

function showLayers(num){
	var templyr;
	if(num > 0){
		if(is.ie4up){
			document.all['info1'].style.visibility = "visible";
		}
		else{
			document.layers['info'].document.layers['info1'].visibility = "show";
		}
		for(var i=1; i<=num; i++){
			for(var j=1; j<=4; j++){
				(i == 1) ? templyr = "link" + i + j + "on": templyr = "link" + i + j + "off";
				if(is.ie4up){
					document.all[templyr].style.visibility = "visible";
				}
				else{
					document.layers['results'].document.layers[templyr].visibility = "show";
				}
			}
		}
	}
}

function linkOn(lyr){
	for(var i=1; i<=4; i++){
		var lastlyr_off = "link" + last_lyr_on + i + "off";
		var lastlyr_on = "link" + last_lyr_on + i + "on";
		var thislyr_off = "link" + lyr + "" + i + "off";
		var thislyr_on = "link" + lyr + "" + i + "on";
		if(is.ie4up){
			document.all[lastlyr_on].style.visibility = "hidden";
			document.all[lastlyr_off].style.visibility = "visible";
			document.all[thislyr_off].style.visibility = "hidden";
			document.all[thislyr_on].style.visibility = "visible";	
		}
		else{
			document.layers['results'].document.layers[lastlyr_on].visibility = "hide";
			document.layers['results'].document.layers[lastlyr_off].visibility = "show";
			document.layers['results'].document.layers[thislyr_off].visibility = "hide";
			document.layers['results'].document.layers[thislyr_on].visibility = "show";
		}
	}
	
	var lastinfolyr = "info" + last_lyr_on;
	var infolyr = "info" + lyr;
	
	if(is.ie4up){
		document.all[lastinfolyr].style.visibility = "hidden";
		document.all[infolyr].style.visibility = "visible";
	}
	else{
		document.layers['info'].document.layers[lastinfolyr].visibility = "hide";
		document.layers['info'].document.layers[infolyr].visibility = "show";
	}
	document['filmshot1'].src=eval("link" + lyr + "_a.src");
	document['filmshot2'].src=eval("link" + lyr + "_b.src");
	
	last_lyr_on = lyr;
}

function linkImageOn(linkName){
	if (document.images){
		(is.ie4up)? document[linkName].src=inprod_edge_on.src : document.layers[linkName + "Edge"].document[linkName].src=inprod_edge_on.src;
	}
	if(is.ie4up){
		document.all[linkName + "TitleOff"].style.visibility = "hidden";
		document.all[linkName + "TitleOn"].style.visibility = "visible";
	}
	else{
		document.layers[linkName + "TitleOff"].visibility = "hide";
		document.layers[linkName + "TitleOn"].visibility = "show";
	}
}

function linkImageOff(linkName){
	if (document.images){
		(is.ie4up)? document[linkName].src=inprod_edge_off.src: document.layers[linkName + "Edge"].document[linkName].src=inprod_edge_off.src;
	}
	if(is.ie4up){
		document.all[linkName + "TitleOn"].style.visibility = "hidden";
		document.all[linkName + "TitleOff"].style.visibility = "visible";
	}
	else{
		document.layers[linkName + "TitleOn"].visibility = "hide";
		document.layers[linkName + "TitleOff"].visibility = "show";
	}
}

function spawn(url, nameW, w, h, x, y) {
	var newWin = window.open(url, nameW, 'height='+h+',width='+w+',scrollbars=1,resizable=0,menubar=0,toolbar=0,status=1,location=0,directories=0,left=' + x + ',top=' + y + '');
}