var tabs=0;
var tab_contents=0;

function activate_tab(elem){
	var content_id, tab_content;
	var cur_tab;
		
	if(Element.hasClassName(elem,"active"))
		return;
		
	tabs = tabs || document.getElementsByTagName("h2");
	
	for (var i=0; i<tabs.length; i++){
		cur_tab = tabs[i];
		content_id = "content_" + cur_tab.innerHTML.strip().toLowerCase().replace(" ","_") 
		tab_content = $(content_id);
		
		if(cur_tab==elem){
			Element.removeClassName(cur_tab,"inactive");
			Element.addClassName(cur_tab,"active");
			tab_content.style.display="block";
			
		}else{
			Element.removeClassName(cur_tab,"active");
			Element.addClassName(cur_tab,"inactive");
			tab_content.style.display="none";
		}
	}
	
}


/////////////////////////////////////////////////////////////////////////////////////////////
var bbuts=0;

function toggle_on(elem){
	
	elem.src = elem.src.replace("_off","_on");	
	bbuts = bbuts || $("bottom_buttons").getElementsByClassName("bottom_button");
	var im;
	
	for (var i=0; i<bbuts.length;i++){
		im=bbuts[i];	
		if(im!=elem){
			im.src = im.src.replace("_on","_off");	
		}
	}
	
}

/////////////////////////////////////////////////////////////////////////////////////////////

function toggle_off(elem){
	bbuts = bbuts || $("bottom_buttons").getElementsByClassName("bottom_button");
	var im;
	
	for (var i=0; i<bbuts.length;i++){
		im=bbuts[i];	
		im.src = im.src.replace("_on","_off");	
	}	
}



document.observe('dom:loaded', function(){  
		if(navigator.userAgent.indexOf("MSIE 6")>-1){
			var items = document.getElementsByClassName("hero");
			for(var i=0; i< items.length; i++){
				items[i].style.marginTop = 0;
				items[i].style.marginBottom = 0;
				items[i].style.marginRight = 0;
			}
			
		}
	})