function clear_checkboxes (myID){
    var frm = document.forms[0];
    for (i=0; i<frm.length; i++){
        if (frm.elements[i].id != myID){
            if (frm.elements[i].id.indexOf ('cb') != -1){
			    frm.elements[i].checked = false;
		    }
        }				
    }
}

function swap_image(myLinkID, myLinkUrl, myImageID, myImageUrl){
    var link = document.getElementById(myLinkID);
    link.href = myLinkUrl;
    var img = document.getElementById(myImageID);
    img.src = myImageUrl;
}




function expandIt2(BlockName)
{
	if (document.getElementById(BlockName).style.display == "block")
		document.getElementById(BlockName).style.display = "none";
	else
		document.getElementById(BlockName).style.display = "block";
}
function expand_all()
{
	var divTags = document.getElementsByTagName("div");
	
	for (var i = 0; i < divTags.length; i++)
	{
		if( divTags[i].style.display=='none' )
			divTags[i].style.display = 'block';
	}

}
function collapse_all()
{
	var divTags = document.getElementsByTagName("div");
	
	for (var i = 0; i < divTags.length; i++)
	{
		if( divTags[i].style.display=='block' )
			divTags[i].style.display = 'none';
	}

}