function ClickLike(ID){
	var http = null;
	if(window.XMLHttpRequest){
		http = new XMLHttpRequest();
	}
	else if(window.ActiveXObject){
		http = new ActiveXObject("Microsoft.XMLHTTP");
	}
	if(http != null){
		http.open("POST","getpost.php",true);
		http.onreadystatechange = ausgaben(ID);
		http.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		http.send("a=1&b=2&c=3");
	}
	function ausgaben(ID){
		if(http.readyState == 0)alert("nicht initalisiert");
		if(http.readyState == 1)alert("laedt");
		if(http.readyState == 2)alert("fertig geladen");
		if(http.readyState == 3)alert("wartet");
		if(http.readyState == 4){
			HoverLike(ID);
			alert("fertig");
		}
	}
}
function HoverLike(ID){
	var ID = document.getElementById(ID);
	ID.style.backgroundColor = "#91D02A";
	ID.innerHTML = AddPlus(parseFloat(ID.innerHTML)+1);
}
function HoverDislike(ID){
	var ID = document.getElementById(ID);
	ID.style.backgroundColor = "#D12F1E";
	ID.innerHTML = AddPlus(parseFloat(ID.innerHTML)-1);
}
function clearLike(ID, PlusMinus){
	var ID = document.getElementById(ID);
	ID.style.backgroundColor = "#ccc";
	
	if(PlusMinus == "like"){
		ID.innerHTML = AddPlus(parseFloat(ID.innerHTML)-1);
	}
	if(PlusMinus == "dislike"){
		ID.innerHTML = AddPlus(parseFloat(ID.innerHTML)+1);
	}
}
function AddPlus(number){
	if(number > 0)
		return "+" + number;
	else
		return number;
}