function moveDIV( var1, var2 )
	{
		if ( var1 == 0 )
		{
			document.getElementById("zeug").style.left = "0px";
			document.getElementById("zeug").style.top = "0px";
				
		} else {
	 
			if ( var2 )
			{
				/* alter Wert ohne Einheit */
				var2 = document.getElementById("zeug").style.left;
				var2 = Number(var2.substring(0, var2.length-2));
				
				var3 = document.getElementById("zeug").style.width;
				var3 = Number(var3.substring(0, var3.length-2));
				
				var4 = document.getElementById("tool").style.width;
				var4 = Number(var4.substring(0, var4.length-2));
	 
				// wenn links am rand angekommen
				if ( var2 + var1 <= 0 )
				{
					if ( var2 + var1 > -var3 + var4 )
					{
						document.getElementById("zeug").style.left = var2 + var1 + "px";
					} else {
	 
						document.getElementById("zeug").style.left = -var3 + var4 + "px";
					}
				}
			} else {
	 
				/* alter Wert ohne Einheit */
				var2 = document.getElementById("zeug").style.top;
				var2 = Number(var2.substring(0, var2.length-2));
				divheight = Number(document.getElementById("zeug").clientHeight);
				if (divheight > 430) {
					divdifferenz = divheight - 430;
				} else {
					divdifferenz = 0;
				}
				//alert ("divdifferenz:"+divdifferenz+":::divheight:"+divheight+":::var2:"+var2+":::var1:"+var1);
				// wenn links am rand angekommen
				if ( (var2 + var1) <= 0 && -var2 <= divdifferenz )	{
					document.getElementById("zeug").style.top = var2 + var1 + "px";
				} else if ( (var2 + var1) <= 0 && -var2 >= divdifferenz && var1 == 10) {
					document.getElementById("zeug").style.top = (var2+var1) + "px";
				}
			}
		}
	}
	 
	function fadeDIV( var1 )
	{
		document.getElementById('steuerung').style.opacity = var1 / 10;
		document.getElementById('steuerung').style.filter = 'alpha(opacity=' + var1*10 + ')';
	}
	 
	aktiv = "";