function newsWindow() 
{
	wintop = window.open("","newswin","width=610,height=430,toolbar=yes,menubar=no,location=no,scrollbars=yes,resizable=yes,status=yes");
      }

function pressWindow() 
{
	wintop = window.open("","press","width=690,height=430,toolbar=yes,menubar=no,location=no,scrollbars=yes,resizable=yes,status=yes");
      }

function infoWindow(a) 
{
	wintop = window.open(a,"info","width=720,height=600,toolbar=yes,menubar=no,location=no,scrollbars=yes,resizable=yes,status=yes");
      }

function mrgWindow() 
{
	wintop = window.open("","mrgmap","width=650,height=550,toolbar=yes,menubar=no,location=no,scrollbars=yes,resizable=yes,status=yes");
      }
      
function photoWindow() 
{
	wintop = window.open("","photo","width=740,height=490,toolbar=no,menubar=no,location=no,scrollbars=no,resizable=yes,status=yes");
      }

function creditWindow() 
{
	wintop = window.open("","credits","width=400,height=360,toolbar=yes,menubar=no,location=no,scrollbars=no,resizable=yes,status=yes");
      }


function toggleLayer( layerId ){
	var newLayer = document.getElementById(layerId);
	if( newLayer.style.display=='inline' )
		newLayer.style.display='none';
	else
		newLayer.style.display='inline';
	return false;
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}