//Site-wide functions

function clearKS() {
	if (document.getElementById("searchterms").value == "Keyword search") {
		document.getElementById("searchterms").value = "";
		document.getElementById("searchterms").style.color = "#363636";
	}
}

sfHover = function() {
	var sfEls = document.getElementById("topNav").getElementsByTagName("li");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);

function start_slideshow(start_frame, end_frame, delay) {
	setTimeout(switch_slides(start_frame, start_frame, end_frame, delay), delay);
}

function switch_slides(frame, start_frame, end_frame, delay) {
	return (function() {
		Effect.Fade('homePic' + frame);
		if (frame == end_frame) { frame = start_frame; } else { frame = frame + 1; }
		setTimeout("Effect.Appear('homePic" + frame + "');", 850);
		setTimeout(switch_slides(frame, start_frame, end_frame, delay), delay + 850);
   })
}