function showhide(lay)

{

	document.getElementById(lay).style.display=(document.getElementById(lay).style.display=="block")?"none":"block";

}



function advHide(lay, img)

{

	document.getElementById(lay).style.display=(document.getElementById(lay).style.display=="block")?"none":"block";

	document.getElementById(img).className=(document.getElementById(img).className=="blue")?"black":"blue";

	

	var new_name 	= lay + "_" + img;

	var new_value 	= document.getElementById(lay).style.display;



	setCookie(new_name, new_value);

}



function setCookie(c_name,value)

{

	var expiredays=20;

	var exdate=new Date();

	

	exdate.setDate(exdate.getDate()+expiredays);

	document.cookie = c_name + "=" +value + ";expires=" + exdate.toGMTString() + ";path=\/";

}



function getCookie(c_name)

{

	if (document.cookie.length>0)

	{

		c_start=document.cookie.indexOf(c_name + "=");

		if (c_start!=-1)

		{ 

			c_start=c_start + c_name.length+1; 

			c_end=document.cookie.indexOf(";",c_start);

			if (c_end==-1) c_end=document.cookie.length;

				return unescape(document.cookie.substring(c_start,c_end));

		} 

	}

	return "";

}



function makeClass(ck)

{

	if(ck=="block")

	{

		return "black";

	}

	else

	{

		return "blue";

	}

}



function loadme()

{

	var cookie1 = getCookie("hd1_a1");

		if(cookie1.length>0)

		{

			document.getElementById("hd1").style.display = cookie1;

			document.getElementById("a1").className = makeClass(cookie1);

		}

	

	var cookie2 = getCookie("hd2_a2");

		if(cookie2.length>0)

		{

			document.getElementById("hd2").style.display = cookie2;

			document.getElementById("a2").className = makeClass(cookie2);

		}

}