function hide_text(id, val)
{
	if(document.getElementById(id).value==val || document.getElementById(id).value=='')
	{
		document.getElementById(id).value='';
		document.getElementById(id).style.color = '#000';
	}
}

function show_text(id, val)
{
	if(document.getElementById(id).value==val || document.getElementById(id).value=='')
	{
		document.getElementById(id).style.color = '#ccc';
		document.getElementById(id).value=val;
	}
}