function toggleDiv(divid)
{
	if(document.getElementById(divid).style.display == 'none')
	{
		document.getElementById(divid).style.display = 'block';
		
		var sMinus = 'shrink.gif';			
		var id = divid.replace('Div','Img');
		
		setimage(id, sMinus)
	}
	else
	{
		document.getElementById(divid).style.display = 'none';
		
		var sPlus  = 'expand.gif';
		var id = divid.replace('Div','Img');
		
		setimage(id, sPlus)
	}
}

function expandAll()
{ 
	for (i in divId_List)
	{ 
		if (divId_List[i] != 0)
		{
			document.getElementById('Div' + divId_List[i]).style.display = "block";
			
			var sMinus = 'shrink.gif';			
			var id = 'Img' + divId_List[i];
			
			setimage(id, sMinus);	
		}			
	} 
} 

function shrinkAll()
{ 
	for (i in divId_List)
	{ 
		if (divId_List[i] != 0)
		{
			document.getElementById('Div' + divId_List[i]).style.display = "none";
			
			var sPlus  = 'expand.gif';
			var id = 'Img' + divId_List[i];
			
			setimage(id, sPlus)
		}
	} 
} 

function changeimage(id, sMinus, sPlus)
{
    var img = document.getElementById(id);
    if (img!=null)
    {
        var bExpand = img.src.indexOf(sPlus) >= 0;
	    if (!bExpand)
		    img.src = 'Images/' + sPlus;
	    else
		    img.src = 'Images/' + sMinus;
    }
}

function setimage(id, sImage)
{
    var img = document.getElementById(id);
    if (img!=null)
    {
        img.src = 'Images/' + sImage;
    }
}