function show_div(str1)	
{

	i = document.all.advertisement_form;
		if(i.style.visibility == "visible")
			{
				//i.style.visibility = "hidden";
			}
		else i.style.visibility = "visible";

}

function show_hide(str1)	
{

	i = str1;
		if(i.style.visibility == "visible")
			{
				i.style.visibility = "hidden";
				i.style.position = "absolute";
			}else{
				i.style.visibility = "visible";
				i.style.position = "fixed";
			}

}

function select_radio(str)
{	
	document.getElementById(str).checked = "checked";
}

function showdiv(str1)	
{
	i = str1;
	if(i.style.visibility == "visible")
		{
			//i.style.visibility = "hidden";
		}else{
			i.style.visibility = "visible";
		}
}