var timeout = 5000;
var timer;



function init(){	
	timer = setInterval("changebodystyle()", timeout);	
	activate_sendbuttons();	
}

function changebodystyle(){
	
	if(document.body.className == 'corporation'){
		document.body.className = 'medium-enterprise';
	} else if(document.body.className == 'medium-enterprise'){
		document.body.className = 'small-business';
	} else {
		document.body.className = 'corporation';
	}	
	
}

function showtab(currobj){

	var newclass = currobj.parentNode.className;	
	var bgimg = document.getElementById('content');	
	
	var oldbg = bgimg.style.backgroundImage;
	bgimg.style.backgroundImage = 'none';	
	document.body.className = newclass;		
	bgimg.style.backgroundImage = oldbg;
	
	clearInterval(timer);	
}

function activate_sendbuttons(){
	var button = document.getElementById('send'); 
	button.value = 'Send';
}