function tab1Clicked(){
	var tab1id = document.getElementById('travelTab1');
	var tab2id = document.getElementById('travelTab2');

	var tab1TempClass = tab1id.className;
	
	var tab2class = tab2id.className.replace(/ open/g,'');
	var tab1class = tab1id.className = tab1TempClass + " open";
		
		tab2id.className = tab2class;
		tab1id.className = tab1class;
		
		document.getElementById('travelTabContent2').style.display = 'none';
		document.getElementById('travelTabContent1').style.display = 'block';
	  
}

function tab2Clicked(){
	var tab1id = document.getElementById('travelTab1');
	var tab2id = document.getElementById('travelTab2');

	var tab2TempClass = tab2id.className;
	
	var tab1class = tab1id.className.replace(/ open/g,'');
	var tab2class = tab2id.className = tab2TempClass + " open";
		
		tab1id.className = tab1class;
		tab2id.className = tab2class;
		
		document.getElementById('travelTabContent1').style.display = 'none';
		document.getElementById('travelTabContent2').style.display = 'block';
}