collapse = {
	COLLAPSIBLE_PARENT_NAME: "collapsible",
	COLLAPSIBLE_PARENT_TYPE: "div",
	// collapse everything in the div except h2
	// h2 must be the first tag in the div, script is dumb at the moment
	exemptTag: 'H2',
	// var COLLAPSIBLE_CHILD_TYPE: "p",
	// this works with ibox without a need for iboxdivs to be display:none
	exempt: 'iboxdiv',
	iboxFirst: [],

	COLLAPSIBLE_EXPAND: "[+]",
	COLLAPSIBLE_SHRINK: "[-]",

initCollapse: function() {
    if(document.getElementById && document.createTextNode) {
        var entries = document.getElementsByTagName(collapse.COLLAPSIBLE_PARENT_TYPE);
        for(i=0;i<entries.length;i++)
            if (collapse.hasClass(entries[i],collapse.COLLAPSIBLE_PARENT_NAME)) {
					var childn = entries[i].getElementsByTagName('*');
		        for(j=0;j<childn.length;j++) collapse.iboxFirst[j]=0;
                collapse.assignCollapse(entries[i]);
            }
    }
},

assignCollapse: function (div) {
    var button = document.createElement('a');
    button.style.cursor='pointer';
    button.style.display='inline';
    button.style.margin='0';
    button.style.paddingRight='0.5em';
    button.style.fontFamily='monospace';
    button.style.fontSize='152%';
    button.style.fontWeight='bold';
    button.setAttribute('expand', collapse.COLLAPSIBLE_EXPAND);
    button.setAttribute('shrink', collapse.COLLAPSIBLE_SHRINK);
    button.setAttribute('state', -1);
    button.className = 'expandbt';
    button.innerHTML='dsds';
    div.insertBefore(button, div.getElementsByTagName('*')[0]);

	button.onclick=function(){
		var state = -(1*this.getAttribute('state'));
		this.setAttribute('state', state);
		var cn = this.parentNode.getElementsByTagName('*');
		// skip this button and h2
		for(j=0;j<cn.length;j++) {
			if (cn[j].tagName.toUpperCase() == 'H2') {
				cn[j].style.display='inline';
			} else {
				if ( cn[j].getAttribute('state') ) {
					this.innerHTML = this.getAttribute(state==1?'expand':'shrink');
				} else {
					if (!collapse.exemptFromToggle(cn[j])) {
						cn[j].style.display=state==1?'none':'';
					} else {
						if (collapse.exemptFromToggle(cn[j]) && collapse.iboxFirst[j]==0) {
							cn[j].style.display='none';
							collapse.iboxFirst[j]=1;
						}
					}
				}
			}
		}
	};
	button.onclick();
},

hasClass: function (el, classname) {
	var re = new RegExp('(^| )'+classname+'( |$)');
	return (re.test(el.className)) ? true : false;
},

exemptFromToggle: function (el) {
	return (collapse.hasClass(el,collapse.exempt)) ? true : false;
},

addEvent: function (elm, evType, fn, useCapture){
  if (elm.addEventListener)
  {
    elm.addEventListener(evType, fn, useCapture);
    return true;
  } else if (elm.attachEvent) {
    var r = elm.attachEvent('on' + evType, fn);
    return r;
  } else {
    elm['on' + evType] = fn;
  }
}

}

collapse.addEvent(window,'load',collapse.initCollapse, false);