var agt=navigator.userAgent.toLowerCase(); 
var is_nav = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1) && (agt.indexOf('webtv')==-1));
var is_mac = (agt.indexOf("mac")!=-1);
var browser_version = parseInt(navigator.appVersion);
var is_nav6 = false;
if (is_nav) {
if (browser_version >= 5) {is_nav6 = true };
}

function popUP(mypage, myname, w, h, pScroll) {
  var winl =  (screen.width - w) / 2;
  var wint = (screen.height - h) / 2;
  winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+pScroll+',toolbar=no,resizable=no,status=no';
  win = window.open(mypage, myname,winprops);
  if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); };
}

function popUpAll(mypage, myname, w, h, pScroll) {
  var winl =  (screen.width - w) / 2;
  var wint = (screen.height - h) / 2;
  winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+pScroll+',toolbar=yes,location=yes,status=yes,menubar=yes,resizable=yes,';
  win = window.open(mypage, myname,winprops);
  if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); };
}


function doBlur(iTem) {
	if (is_nav) {
		// don't issue blur command for netscape
	} else {
		// issue blur command to turn off box around clicked elements in explorer
		iTem.blur()
	}
}

function writeCSS(path) {
	MacIE = path + "mac_ie.css"; 
	MacNav = path + "mac_nav.css";
	WinIE = path + "pc_ie.css";
	WinNav4 = path + "pc_nav4.css";
	WinNav6 = path + "pc_nav.css";
	if (is_mac) {
		if(is_nav) {
		 document.write("<link rel='stylesheet' href='" + MacNav + "' type='text/css'>");
		} else {
		 document.write("<link rel='stylesheet' href='" + MacIE + "' type='text/css'>");
		}
	} else {
		if(is_nav) {
			if(is_nav6) {
				document.write("<link rel='stylesheet' href='" + WinNav6 + "' type='text/css'>");
			} else {
				document.write("<link rel='stylesheet' href='" + WinNav4 + "' type='text/css'>");
			}
		} else {
		 document.write("<link rel='stylesheet' href='" + WinIE + "' type='text/css'>");
		}

	}
}

function swapImage(pImg) {
 	var objString = pImg.src
 	var locPos = objString.lastIndexOf("_")
 	var imageTypePos = objString.lastIndexOf(".")
 	var imageString = objString.substring(imageTypePos,objString.length);
 	var locString = objString.substring(0,locPos)
 	var stateString = objString.substring(locPos,objString.length)
 	if (stateString == "_up" + imageString) {
  		stateString = "_over" + imageString
 	} else {
  	stateString = "_up" + imageString
	}
	setString = locString + stateString
 	pImg.src = setString
}

function preLoadImages() {
   if (document.images) {
	var j=0;
	var preImage = new Array();
	for (i=0; i<preLoadImages.arguments.length; i++) {
		preImage[i]=new Image();
		preImage[i].src=preLoadImages.arguments[i]
		//alert(i)
		//window.status = preImage[i].src
	}
   }
}