// menu effect
function trigger_effect(src_element, div_id, effect, first_img, second_img){
         
        heading = document.getElementById(div_id);
	do {
		heading = heading.previousSibling; // step up
	} while (heading.nodeType != 1);  // until find a tag (type==1)
	
	alreadyExpanded = (heading.className == "expanded");
	if (heading.className == "collapsed") 
		heading.className = "expanded";
         
         Effect.toggle(div_id, effect, {afterFinish:function(){
                        image = src_element.getElementsByTagName('img')[0];
                        image.src = image.src.match(first_img) ? second_img : first_img;
                        
                        if( alreadyExpanded )
                        	heading.className = "collapsed";
                        
                        }});                       
                        return true;
            }

// Stuff for the styled radio buttons

var d = document;
var safari = (navigator.userAgent.toLowerCase().indexOf('safari') != -1) ? true : false;
var gebtn = function(parEl,child) { return parEl.getElementsByTagName(child); };
onload = function() {
    if(!d.getElementById || !d.createTextNode) return;
    var ls = gebtn(d,'label');
    for (var i = 0; i < ls.length; i++) {
        var l = ls[i];
        if (l.className.indexOf('label_') == -1) continue;
        var inp = gebtn(l,'input')[0];
        if (l.className == 'label_check') {
            l.className = (safari && inp.checked == true || inp.checked) ? 'label_check c_on' : 'label_check c_off';
            l.onclick = check_it;
        };
        if (l.className == 'label_radio') {
            l.className = (safari && inp.checked == true || inp.checked) ? 'label_radio r_on' : 'label_radio r_off';
            l.onclick = turn_radio;
        };
    };
};

var check_it = function() {
    var inp = gebtn(this,'input')[0];
    if (this.className == 'label_check c_off' || (!safari && inp.checked)) {
        this.className = 'label_check c_on';
        if (safari) inp.checked = true;
    } else {
        this.className = 'label_check c_off';
        if (safari) inp.checked = false;
    };
};
var turn_radio = function() {
    var inp = gebtn(this,'input')[0];
    if (this.className == 'label_radio r_off' || inp.checked) {
        var ls = gebtn(this.parentNode,'label');
        for (var i = 0; i < ls.length; i++) {
            var l = ls[i];
            if (l.className.indexOf('label_radio') == -1)  continue;
            l.className = 'label_radio r_off';
        };
        this.className = 'label_radio r_on';
        if (safari) inp.checked = true;
    } else {
        this.className = 'label_radio r_off';
        if (safari) inp.checked = false;
    };
};


function switch_pics(imgToShow, numPics) {
	for (i = 1; i <= numPics; i++) {
		var div = "div" + i;
		if (document.getElementById(div).style.display != 'none') {
			new Effect.BlindUp(div, {
				afterFinish: function(){
					new Effect.BlindDown(imgToShow);
				}
			});
		}
	}
}