//javascript By Debparna Dutta
function popDiv(divId,aId)
{
	document.getElementById('picHolderDrink').style.display = "none";
	document.getElementById('picHolderTree').style.display = "none";
	document.getElementById('picHolderWatch').style.display = "none";
	document.getElementById('picHolderCake').style.display = "none";
	document.getElementById('picHolderHat').style.display = "none";
	document.getElementById('picHolder').style.display = "none";
			
	document.getElementById('about').classId = "nav";
	document.getElementById('advertising').classId = "nav";
	document.getElementById('public_relations').classId = "nav";
	document.getElementById('interactive').classId = "nav";
	document.getElementById('blog').classId = "nav";
		
	if(divId){
		document.getElementById(divId).style.display = "block";
	} else {
		document.getElementById('picHolder').style.display = "block";
	}
}