function makeactive(tab) 
{ 
	//alert("ma" +tab);
	if(tab==1)
	{
		document.getElementById("our-story").style.display = "inline"; 
		document.getElementById("olsen-lab").style.display = "none";
		document.getElementById("dream-team").style.display = "none";
		document.getElementById('img-ourstory').src='imgs/butn_story.jpg';
		document.getElementById('img-olsenlab').src='imgs/butn_olsenover.jpg';
		document.getElementById('img-dreamteam').src='imgs/butn_dreamover.jpg';
	}
	else if(tab==2)
	{
		document.getElementById("our-story").style.display = "none"; 
		document.getElementById("olsen-lab").style.display = "inline"; 
		document.getElementById("dream-team").style.display = "none";
		document.getElementById('img-ourstory').src='imgs/butn_storyover.jpg';
		document.getElementById('img-olsenlab').src='imgs/butn_olsen.jpg';
		document.getElementById('img-dreamteam').src='imgs/butn_dreamover.jpg';
	}
	else
	{
		document.getElementById("our-story").style.display = "none"; 
		document.getElementById("olsen-lab").style.display = "none";
		document.getElementById("dream-team").style.display = "inline";
		document.getElementById('img-ourstory').src='imgs/butn_storyover.jpg';
		document.getElementById('img-olsenlab').src='imgs/butn_olsenover.jpg';
		document.getElementById('img-dreamteam').src='imgs/butn_dream.jpg';
	}
}