//this switches expand collapse icons
function filter(imagename,objectsrc){
	if (document.images){
		if (document.images[imagename] != null)
		{
			document.images[imagename].src=eval(objectsrc+".src");
			}
	}
}

function toggle(id) { 
/*	var cvelement = document.getElementById(id);
	if(cvelement.style.display == "none"){
		cvelement.style.display = "block";
	} else {
		cvelement.style.display = "none";
	}
*/
	if (document.getElementById) { // DOM3 = IE5, NS6
		if (document.getElementById(id).style.display == "none"){
			document.getElementById(id).style.display = 'block';
		} else {
			document.getElementById(id).style.display = 'none';			
		}	
	} else { 
		if (document.layers) {	
			if (document.id.display == "none"){
				document.id.display = 'block';
			} else {
				document.id.display = 'none';
			}
		} else {
			if (document.all.id.style.visibility == "none"){
				document.all.id.style.display = 'block';
			} else {
					document.all.id.style.display = 'none';
			}
		}
	}
}