function toggleLayer( whichLayer )
	{
	var elem, vis;
	if( document.getElementById ) // this is the way the standards work
    	elem = document.getElementById( whichLayer ); 
	else if( document.all ) // this is the way old msie versions work 
		elem = document.all[whichLayer];
	else if( document.layers ) // this is the way nn4 works
		elem = document.layers[whichLayer];
	vis = elem.style;
	// if the style.display value is blank we try to figure it out here
	if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)    
		vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';  
	vis.display = (vis.display==''||vis.display=='block')?'none':'block';


var head = document.getElementById("header_" + whichLayer)

	if(vis.display==''||vis.display=='block')    
head.innerHTML = head.innerHTML.replace("[+]","[-]")
else
head.innerHTML = head.innerHTML.replace("[-]","[+]")

}
	
    function load_letter_alert () 
        {alert("BEFORE you print, you MUST change your page setup! Disable printing of headers and footers, set the printing orientation to LANDSCAPE, and then set your margins to the following figures:\n\nTop margin: 4 inches \nLeft margin: 5.8 inches")}

    function loadalert () 
        {alert("BEFORE you print, you MUST change your page setup! Disable printing of headers and footers, set the printing orientation to PORTRAIT, and then set your margins to the following figures:\n\nTop margin: .8 inches \nRight margin: .7 inches \nBottom margin: .25 inches \nLeft margin: 1 inch")}