function NumericUpDown(_name)
{

	var element;
	var name = _name;
	
	var value_before = null;
	var timer = null;
	var timerActive = false;
	
	var onchange;
	var onkeyup;
	
	this.min = -4294967296;
	this.max = 4294967296;
	this.decimals = 0;
	
	this.onUp = function() { return true };
	this.onDown = function() { return true };
	
	
	/** General **/
	
	this.assign = function(_id) {
		
		element = document.getElementById(_id);
		element.style.textAlign = "right";

		getById('nud_arrowContainer_' + _id).innerHTML = "<img id='img_" + name + "' src='" + iconPath + "/smallarrow_updown.png' usemap='#map_" + name + "' style='margin-left: 2px; border: none; position: relative; top: 2px' />"
			+ "<map name='map_" + name + "'>"
			+ "<area href='#' onclick='return false' onmousedown='" + name + ".upMouseDown()' onmouseup='" + name + ".mouseUp()' onmouseleave='" + name + ".mouseUp()' coords='0,0,10,6' shape='rect' />"
			+ "<area href='#' onclick='return false' onmousedown='" + name + ".downMouseDown()' onmouseup='" + name + ".mouseUp()' onmouseleave='" + name + ".mouseUp()' coords='0,8,10,14' shape='rect' />"
			+ "</map>";
			
		// Set event handlers to check the value when changed
		onkeyup = element.onkeyup;
		element.onkeyup = new Function(name + ".keyUp()");
		onchange = element.onchange;
		element.onchange = new Function(name + ".change()");
		
		// Check current value
		this.checkLimits();
		this.cleanValue();
	
	}
	
	this.mouseUp = function() {
		timerActive = false;
		
		if(timer)
			window.clearTimeout(timer);
	}
	
	this.keyUp = function() {
		
		//this.cleanValue();
		
		if(onkeyup != null)
			onkeyup();
		
	}
	
	this.change = function() {
		
		this.checkLimits();
		this.cleanValue();
		
		if(onchange != null)
			onchange();
		
	}
	
	this.cleanValue = function() {
	
		// Replace invalid chars and make int
		var value = element.value.replace(",", ".");
		value = value.replace(/[^0-9-\.]/g, "");

		if(this.decimals == 0)
			value = parseInt(value);
		else {
			if (parseFloat(value) == 0) 
				value = "0.00";
			else {
				var multiplier = Math.pow(10, this.decimals);
				value = parseInt(value * multiplier) + "";
				var beforeComma = value.length - this.decimals;
				value = value.substring(0, beforeComma) + "." + value.substring(beforeComma);
			}
		}
		element.value = value;
		
		// Set default value if no value set
		if(element.value == "NaN" || element.value == "")
			element.value = (this.min > 0 ? this.min : 0);
			
	}
	
	this.checkLimits = function() {
		
		this.cleanValue();
		
		if(parseFloat(element.value) > this.max)
			// Set to maximum if too high
			element.value = this.max;
		else if(parseInt(element.value) < this.min)
			// Set to minimum if too small
			element.value = this.min;
		else
			// Return true if everything's right
			return true;
		
		// Return false if value was too high or small
		return false;
		
	}
	
	this.setEnabled = function(_val) {
		
		element.disabled = !_val;
		
		if(_val) {
			getById("img_" + name).useMap = "#map_" + name;
		}
		else {
			getById("img_" + name).useMap = "";
		}
		
	}
	
	
	/** Up **/
	
	this.up = function() {
		this.cleanValue();
		var value = parseFloat(element.value) + 1;
		if(value <= this.max && element.disabled == false) {
			element.value = value;
			this.cleanValue();
			this.onUp();
			if(onchange != null)
				onchange();
			return true;
		}
		else
			return false;
	}
	
	this.upTimer = function() {
		if(!timerActive)
			return;
		if(this.up())
			timer = window.setTimeout(name + ".upTimer()", 50);
	}
	
	this.upMouseDown = function() {
		this.up();
		timerActive = true;
		timer = window.setTimeout(name + ".upTimer()", 500);
	}
	
	
	/** Down **/
	
	this.down = function() {
		this.cleanValue();
		var value = parseFloat(element.value) - 1;
		if(value >= this.min && element.disabled == false) {
			element.value = value;
			this.cleanValue();
			this.onDown();
			if(onchange != null)
				onchange();
			return true;
		}
		else
			return false;
	}
	
	this.downTimer = function() {
		if(!timerActive)
			return;
		if(this.down())
			timer = window.setTimeout(name + ".downTimer()", 50);
	}
	
	this.downMouseDown = function() {
		this.down();
		timerActive = true;
		timer = window.setTimeout(name + ".downTimer()", 500);
	}
	
}