var HeadArray=new Array();

function showhidefield(id)
{
	if (document.getElementById(id).style.display == "none")
	{
		showfield(id);			
	}else{
		hidefield(id);
	}
}

function showOnly(id)
{
	
	for( j=0; j < HeadArray.length ; j++)
	{	
		if (HeadArray[j] == id){ showfield(HeadArray[j]);}
		else{ hidefield(HeadArray[j]);}
	}
}
/**/

function showfield(id)
{
	
	document.getElementById(id).style.display = "block";
}
function hidefield(id)
{
	
	document.getElementById(id).style.display = "none";
}