var Site = {
	init: function(){
		Fields.init();
		var popup = document.getElementById("terms");
		if(popup){
		    popup.onclick = function(e){
		        var win = window.open(this, "Terms", "menubar=no, width=480, height=500, toolbar=no, scrollbars=yes");
		        if(win) win.focus();
		        return false;
		    };
		}
	},	
	/* Written by Jonathan Snook, http://www.snook.ca/jonathan
	 * Add-ons by Robert Nyman, http://www.robertnyman.com
	 */
	getElementsByClassName:function(oElm, strTagName, strClassName) {
	    var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
	    var arrReturnElements = new Array();
	    strClassName = strClassName.replace(/\-/g, "\\-");
	    //var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|EL)");
	    var oRegExp = new RegExp('\\b'+strClassName+'\\b');
	    var oElement;
	    for(var i=0; i<arrElements.length; i++){
	        oElement = arrElements[i];
	        if(oRegExp.test(oElement.className)){
	            arrReturnElements.push(oElement);
	        }   
	    }
	    return (arrReturnElements)
	},
	/**
	 * addEvent found at http://www.quirksmode.org/blog/archives/2005/10/_and_the_winner_1.html
	 */
	addEvent:function(obj, type, fn) {
		if (obj.addEventListener)
			obj.addEventListener(type, fn, false);
		else if (obj.attachEvent) {
			obj["e"+type+fn] = fn;
			obj[type+fn] = function() {obj["e"+type+fn](window.event);}
			obj.attachEvent("on"+type, obj[type+fn]);
		}
	}
};
var Fields = {
	init: function(){
		var fields = Site.getElementsByClassName(document.body, "input", "field");
		for(var i=0;i<fields.length;i++){
			new Field(fields[i]);
		}
	}
};
var Field = function(el){
	Field.change = function(e){
		if(el.value.length > 0){
		    el.className = el.className.replace(" inactive", "");
		    el.className += " filled";
		}
		else el.className += " inactive";
	};
	Field.focus = function(e){
		el.className += " focus";
	};
	Field.blur = function(e){
		el.className = this.className.replace(" focus", "");
	};
	Site.addEvent(el, "change", Field.change);
	Site.addEvent(el, "focus", Field.focus);
	Site.addEvent(el, "blur", Field.blur);
	Field.change();
};

Site.addEvent(window, "load", Site.init);