function hideShow(blk,blkAlt,img,imgAlt){

var img=document.getElementById(img)
var imgAlt=document.getElementById(imgAlt)

switch (document.getElementById(blk).style.display)
  {
    case 'block': {	
		img.src='/images/arrow-red-right.gif';
		document.getElementById(blk).style.display='none';
		document.getElementById(blkAlt).style.display='block';
		imgAlt.src='/images/arrow-red-down.gif';		
		break }
		
    case 'none': {
		img.src='/images/arrow-red-down.gif';
		document.getElementById(blk).style.display='block';
		document.getElementById(blkAlt).style.display='none';
		imgAlt.src='/images/arrow-red-right.gif';
		break }  
  }
}

function hideShow2(blk,img){

var img=document.getElementById(img)

switch (document.getElementById(blk).style.display)
  {
    case 'block': {img.src='/images/arrow-red-right.gif';document.getElementById(blk).style.display='none';break }
    case 'none': {img.src='/images/arrow-red-down.gif';document.getElementById(blk).style.display='block';break }  
  }
}