function changeClassOn(id){
	document.getElementById(id).setAttribute("class", "menu-link-selected");
}
function changeClassOff(id){
	document.getElementById(id).setAttribute("class", "menu-link");
}

function checkMySearch(){
	
	if($('#search').val() =='' || $('#search').val() =='search'){
		alert("Please enter a keyword and press 'Enter'.");
		return false;
	}
	return true;
}
function changeImage(id,image){
	document.getElementById(id).src=image;
}
function switcher(status,id){
	if(status =='on'){
		document.getElementById(id).style.visibility ='visible';
	}
	if(status=='off'){
		document.getElementById(id).style.visibility ='hidden';
	}
}
function changeLinkClassOn(id){
		document.getElementById(id).setAttribute("class", "menu-subtitle-a-over");
	
}
function changeLinkClassOff(id){
		document.getElementById(id).setAttribute("class", "menu-subtitle-a");
	
}