var isIE = ((navigator.userAgent.indexOf("MSIE") != -1) && (navigator.userAgent.indexOf("Opera") == -1));
var isNS = (navigator.appName == "Netscape");
var isOpera = (navigator.userAgent.indexOf("Opera") != -1);

function embedVRML(VRMLfile, VRMLwidth, VRMLheight, VRMLcontrol)
{
	var msg = "";
	if(VRMLfile == "") {msg+="Please enter a VRML file.\n";}
	if(VRMLwidth == "") {msg+="Please enter a VRML width.\n";}
	if(VRMLheight == "") {msg+="Please enter a VRML height.\n";}
	if(VRMLcontrol == "") {msg+="Please enter a VRML control panel value (true||false).\n";}
	if(msg!="")
	{
		alert(msg);
	}
	else
	{
		if(isIE)
		{
			document.write(
			"<object type='x-world/x-vrml' width='"+VRMLwidth+"' height='"+VRMLheight+"'>"
			+"<param name='src' value='"+VRMLfile+"' />"
			+"<param name='sgi-dashboard' value='"+VRMLcontrol+"' />"
			+"</object>"
			);
		}
		if(isNS || isOpera)
		{
			document.write(
			"<embed src='"+VRMLfile+"' sgi_dashboard='"+VRMLcontrol+"' type='x-world/x-vrml' width='"+VRMLwidth+"' height='"+VRMLheight+"' />"
			);
		}
	}
}