function in_field(field_name,val)
{
	if (document.getElementById(field_name).value==val)
	{
		document.getElementById(field_name).value="";
	}
}

function out_field(field_name,val)
{
	if (document.getElementById(field_name).value=="")
	{
		document.getElementById(field_name).value=val;
	}
}