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

function changeImages() 
{
	if (document.images) 
	{
		for (var i = 0; i < changeImages.arguments.length; i+= 2) 
		{
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

function changeImagesInp(el,img_src){el.src = img_src;}
			
var preloadFlag = false;
function preloadImages() 
{
	if (document.images) 
	{
		btn_request_down = newImage("/img/buttons/btn_request_down.gif");
		btn_request_over = newImage("/img/buttons/btn_request_over.gif");
		btn_clear_down = newImage("/img/buttons/btn_clear_down.gif");
		btn_clear_over = newImage("/img/buttons/btn_clear_over.gif");
		btn_back_down = newImage("/img/buttons/btn_back_down.gif");
		btn_back_over = newImage("/img/buttons/btn_back_over.gif");
		btn_order_down = newImage("/img/buttons/btn_order_down.gif");
		btn_order_over = newImage("/img/buttons/btn_order_over.gif");
		preloadFlag = true;
	}
}

var cash_images = Array();

function preload_img(src)
{
	cash_images[cash_images.length] = new Image();
	cash_images[cash_images.length-1].src = src;
}