var preloadFlag = false;

function newImage(arg) 
{
	if (document.images) 
	{
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImagesArray(array) 
{
	if (preloadFlag == true) 
	{
		var d = document; var img;
		for (var i=0; i<array.length; i+=2) 
		{
			img = null; var n = array[i];
			if (d.images) 
			{
				img = d.images[n];
			}
		
			if (!img && d.getElementById) 
			{
				img = d.getElementById(n);
			}

			if (img) 
			{
				img.src = array[i+1];
			}
		}
	}
}

function changeImages() 
{
	changeImagesArray(changeImages.arguments);
}

function preloadImages() 
{
	if (document.images) 
	{
		pre_1 = newImage('images/menu1x.gif');
		pre_2 = newImage('images/menu2x.gif');
		pre_3 = newImage('images/menu3x.gif');
		pre_4 = newImage('images/menu4x.gif');
		pre_5 = newImage('images/menu5x.gif');
		pre_6 = newImage('images/menu6x.gif');
		preloadFlag = true;
	}
}