var shadeOfGrey = "silver";

function ymMenuChange()
{
	var menuForm = document.getElementById("categoryFormAddForm");
	var target = "c/";
	
	var ar = menuForm.getElementsByTagName("select");	
	
	for (var i=0; i<ar.length; i++)
	{
		if(ar[i].value)
			target += ar[i].value + "/";
		else 
			break;
	}
	//target = (target == "c/")? "" : target;
	linkForm.action = target;
	linkForm.submit();
}
var grey = false;
function turnGrey()
{
	var el = document.getElementById("contents");
	if(!el) 
		return;

	if(grey == false)
	{
		switchColor(shadeOfGrey)
	}
	else
	{
		switchColor("");
	}
	grey = !grey;
}
function switchColor(color)
{
	var el = document.getElementById("contents");
	if(!el) 
		return;

	//h1īs
	var h1 = el.getElementsByTagName("h1")
	for(var i = 0; i < h1.length; i++)
	{
		h1[i].style.color = color;
	}
	//element text
	el.style.color = color;
	//links
	var links = el.getElementsByTagName("a");
	for(var i = 0; i < links.length;i++)
	{
		links[i].style.color = color;
		for(var j = 0; j<links[i].getElementsByTagName("img").length; j++)
		{
			links[i].getElementsByTagName("img")[j].style.borderColor = color;
		}
	}
	//products borders
	var tables = el.getElementsByTagName("table");
	for(var i = 0; i < tables.length;i++)
	{
		if(tables[i].className == "product")
		{
			tables[i].style.borderColor = color;
		}
	}
	//products borders
	var spans = el.getElementsByTagName("span");
	for(var i = 0; i < spans.length;i++)
	{
		if(spans[i].className == "tip")
		{
			spans[i].style.color = color;
		}
	}
}