function UCFirst(str){
   // split string
   firstChar = str.substring(0,1);
   remainChar = str.substring(1);

   // convert case
   firstChar = firstChar.toUpperCase(); 
   remainChar = remainChar.toLowerCase();

   return firstChar + remainChar
}
	
function switchTab(element) {
	var divLayers = new Array("travel","annual","student","protection");
	for (x in divLayers) {
		if(divLayers[x] != element) {
			document.getElementById(divLayers[x]+'Container').style.display = 'none';
			document.getElementById(divLayers[x]+'Tab').className = 'nav' + UCFirst(divLayers[x]);
		} else {
			document.getElementById(divLayers[x]+'Container').style.display = '';
			document.getElementById(divLayers[x]+'Tab').className =  'nav' + UCFirst(divLayers[x]) + 'On';
		}
	}
}