function moveDIV( var1, var2 )
    {
        if ( var1 == 0 )
        {
	        document.getElementById("scroll_content").style.left = "0px";
	        document.getElementById("scroll_content").style.top = "0px";
	    }
        else
        {
	        if ( var2 )
            {
	            var2 = document.getElementById("scroll_content").style.left;
	            var2 = Number(var2.substring(0, var2.length-2));
	            var3 = document.getElementById("scroll_content").style.width;
	            var3 = Number(var3.substring(0, var3.length-2));
	            var4 = document.getElementById("scroll").style.width;
	            var4 = Number(var4.substring(0, var4.length-2));
	            
	            if ( var2 + var1 <= 0 )
                {
	                if ( var2 + var1 > -var3 + var4 )
                    {
	                    document.getElementById("scroll_content").style.left = var2 + var1 + "px";
	                }
                    else
                    {
	                    document.getElementById("scroll_content").style.left = -var3 + var4 + "px";
	                }
	            }
	        }
            else
            {
	            var2 = document.getElementById("scroll_content").style.top;
	            var2 = Number(var2.substring(0, var2.length-2));
	            
	            if ( var2 + var1 <= 0 )
                {
	                document.getElementById("scroll_content").style.top = var2 + var1 + "px";
	            }
	        }
	    }
    }
        
    function fadeDIV( var1 )
    {
        document.getElementById('steuerung').style.opacity = var1 / 5;
        document.getElementById('steuerung').style.filter = 'alpha(opacity=' + var1*10 + ')';
    }
    
    aktiv = "";