var stylesheet_url = "";

function getStylesheetURL() {
	if ( !stylesheet_url ) {
	    if ( scripts = document.getElementsByTagName("script") ) {
			for ( var i = 0; i < scripts.length; i++ ) {
				var s = scripts[i];
				if ( s.src && s.src.match(/functions\.js(\?.*)?$/) ) {
					stylesheet_url = s.src.replace(/functions\.js(\?.*)?$/,'');
					break;
				}
			}
		}
	}
	return stylesheet_url;
}

function show(i)
{
	var d=document.getElementById('expr'+i)
	var im=document.getElementById('im'+i);
	if (d.style.display!='block'){
		d.style.display='block';
		im.src = getStylesheetURL() + "/images/minus.gif";
		im.alt='collapse';
	}else{
		d.style.display='none';
		im.src = getStylesheetURL() + "/images/plus.gif";
		im.alt='expand';
	}
} 

function browse_exp(select)
{
	if(select.selectedIndex!=0){	
		document.location = select.options[select.selectedIndex].value;
	}
}