function clearText(field){

    if (field.defaultValue == field.value) field.value = '';
    else if (field.value == '') field.value = field.defaultValue;

}
function isNumberKey(evt)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode
         if (charCode > 31 && (charCode < 48 || charCode > 57))
            return false;

         return true;
      }



function setClassName(objId, className) {
	document.getElementById(objId).className = className;
}


function makeVisible(thisDiv){
	document.getElementById(thisDiv).style.display = "inline";
}
function makeInvisible(thisDiv){
	document.getElementById(thisDiv).style.display = "none";
}


           
                
/* MAIN NAVIGATION */		
		
function activateNav(navID){
	if(navID != "" && document.getElementById(navID) != null){
		document.getElementById(navID).className = "active"
	}
}

function highlightNav(navName){
	document.getElementById(navName).className = "active"
}

function closeMessageWindow(){
	document.getElementById('messageWindow').style.display = "none";
}

function updateFranchiseAdmin(selector,ref){
	window.location = "user_activateLocation.php?id="+selector.value+"&ref="+ref	
}