function clearText(thefield) {
  if (thefield.defaultValue==thefield.value) { thefield.value = "" }
} 
function replaceText(thefield) {
  if (thefield.value=="") { thefield.value = thefield.defaultValue }
}



var s='';
function link_show(d,a)
{
	 s=document.getElementById(a).className
	 document.getElementById(d).style.display='block';
	 document.getElementById(a).className='sel';
	 
}
function link_hide(d,a)
{
	 document.getElementById(d).style.display='none';	 
	 if(s=='sel')
	 {
		 document.getElementById(a).className=s;
	 }
	 else
	 {
		 document.getElementById(a).className='';
	 }
}


function map_show(d)
{
	 document.getElementById(d).style.display='block';
}
function map_hide(d)
{
	 document.getElementById(d).style.display='none';
}


function big_map(map) 
{
	i=1;
	
	while (document.getElementById("map_"+i))
	 {
	 document.getElementById("map_"+i).style.display='none';
	 i++;
	 
	 }
	 document.getElementById(map).style.display='block';
}