sfHover = function() {
	var sfEls = document.getElementById("nav").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"), "");
		}
	}
	var submitRoll = document.getElementById("submit-roll");
		submitRoll.onmouseover=function() {
			this.className+=" sfhover";
		}
		submitRoll.onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);

/**
+	clearField()
+
+	@requires
+		none
+
+	@arguments
+		field - the DOM object whose value you wish to clear (will almost always be the self-reference of this)
+		text - the default text of the field
*/
function clearField(field, text) {
	if (field.value == text) { field.value = ""; }
	return;
}

/**
+	fillField()
+
+	@requires
+		isblank()
+
+	@arguments
+		field - the DOM object whose value you wish to fill (will almost always be the self-reference of this)
+		text - the default text of the field
*/
function fillField(field, text) {
	if (isblank(field.value)) { field.value = text; }
	return;
}

// finds if a string is blank (nothing but spaces)
function isblank(x) {
	var blank = true;
	for (i = 0; i < x.length; i++) {
		if (x.charAt(i) != ' ') { blank = false; }
	}
	return blank;
}

var win = null;
function NewWindow(mypage,myname,w,h,scroll){
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable=no';
	win = window.open(mypage,myname,settings);
}

function toggleNav(id) {
	var divs = document.getElementsByTagName("div");
  document.getElementById(id).blur();
  
  if (document.getElementById(id).style.display == "none") {
	}
	else {
	}
  
	for (i = 0; i < divs.length; i++) {
		if (divs[i].id.indexOf("left-sub-") != -1 && divs[i].style.display != "none") {
			Effect.toggle(divs[i].id,'blind');
		}
	}

  Effect.toggle(id,'blind');



	return false;

}