browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion);

if (browser_name == "Netscape" && browser_version >= 3.0) { browser_ok = 'true'; }
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 3.0) { browser_ok = 'true'; }
else { browser_ok = 'false'; }

function change(img, ref) {
   if (browser_ok == 'true') {
       document.images[img].src = ref;
   }
}

if (browser_ok == 'true')
{
a1=new Image; a1.src="images/ctdark.gif";
a2=new Image; a2.src="images/ctlite.gif";
a3=new Image; a3.src="images/ctdark2.gif";
a4=new Image; a4.src="images/ctlite2.gif";

a5=new Image; a5.src="../images/vl1_avtonom.gif";
a6=new Image; a6.src="../images/vl1_rezerv.gif";
a7=new Image; a7.src="../images/vl1_welding.gif";
a8=new Image; a8.src="../images/vl1_generat.gif";
a9=new Image; a9.src="../images/vl1_converter.gif";
a10=new Image; a10.src="../images/vl1_tnp.gif";
a10=new Image; a10.src="../images/vl1_motor.gif";
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
function change2(img, ref, img2, ref2) {
   if (browser_ok == 'true') {
       document.images[img].src = ref;
	   document.images[img2].src = ref2;
   }
}



required = new Array("Firm", "Face", "Phone", "mail");
required_show = new Array("наименование организации", "контактное лицо", "контактный телефон", "электронный адрес");

function CheckForm () {

var i, j;

for(j=0; j<required.length; j++) {
    for (i=0; i<document.forms[0].length; i++) {
        if (document.forms[0].elements[i].name == required[j] && document.forms[0].elements[i].value == "" ) {
            alert('Пожалуйста, введите ' + required_show[j]);
            document.forms[0].elements[i].focus();
            return false;
        }
    }
}

return true;
}