function Popup(swidth,sheight,url,nome){
    var swidth;
    var sheight;
    var tipo;
	var WinHndl;
	var url;
	var nome;
	
	if(navigator.appName == "Microsoft Internet Explorer" &&  parseInt(navigator.appVersion) >= "4")	{
		//url para ie 4 ou maior
		if (navigator.appVersion.toLowerCase().indexOf("macintosh") > 0) {
		  swidth = swidth -10;
		  sheight = sheight + 4;
		}
		else {
		  swidth = swidth;
		  sheight = sheight;
		}
	}
	else if(navigator.appName == "Microsoft Internet Explorer" &&  parseInt(navigator.appVersion) < "4")	{
		//url para ie menores que 4
		if (navigator.appVersion.toLowerCase().indexOf("macintosh") > 0) {
		  swidth = swidth - 18;
		  sheight = sheight - 20;
		}
		else {
		  swidth = swidth;
		  sheight = sheight;
		}
	}
	else if(navigator.appName == "Netscape" && parseInt(navigator.appVersion) >= "4")	{
		//url para ns 4 ou maior
		if (navigator.appVersion.toLowerCase().indexOf("macintosh") > 0) {
		  swidth = swidth + 2;
		  sheight = sheight;
		}
		else {
		  swidth = swidth;
		  sheight = sheight;
		}
	}
	else if(navigator.appName == "Netscape" &&  parseInt(navigator.appVersion) < "4")	{
		//url para ns menores que 4
		if (navigator.appVersion.toLowerCase().indexOf("macintosh") > 0) {
		  swidth = swidth;
		  sheight = sheight;
		}
		else {
		  swidth = swidth;
		  sheight = sheight;
		}
	}

	tipo = "'toolbar=no,location=no,status=no,menubar=no,directories=no,scrollbars=no,resizable=no,width=" + swidth + ",height=" + sheight + ",left=10,top=10'";
	WinHndl = window.open(url,nome,tipo);
}