function DoNav(theUrl) {
	document.location.href = theUrl;
}
function toggleLayer( whichLayer) {
	var elem, vis;
	if( document.getElementById ) // this is the way the standards work
		elem = document.getElementById( whichLayer );
	else if( document.all ) // this is the way old msie versions work
		elem = document.all[whichLayer];
	else if( document.layers ) // this is the way nn4 works
		elem = document.layers[whichLayer];
	vis = elem.style;
	// if the style.display value is blank we try to figure it out here
	if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
		vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
		vis.display = (vis.display==''||vis.display=='block')?'none':'block';
}
function hide_box() {
	if (navigator.appVersion.indexOf("MSIE")!=-1) {
		if (navigator.appVersion.indexOf("7.0")<0) {
			selects = document.getElementsByTagName("select");
			for (i = 0; i != selects.length; i++) {
        		selects[i].style.visibility = "hidden";
        	}
		}			
	}	
}
function view_box() {
	if (navigator.appVersion.indexOf("MSIE")!=-1) {
		if (navigator.appVersion.indexOf("7.0")<0) {		
			selects = document.getElementsByTagName("select");
			for (i = 0; i != selects.length; i++) {
				selects[i].style.visibility = "visible";
        	}
		}			
	}	
}