var isDHTML = 0;
var isLayers = 0;
var isAll = 0;
var isID = 0;
currList = "none"
currCategory = "none"
if (document.getElementById) {isID = 1; isDHTML = 1;}
else {
browserVersion = parseInt(navigator.appVersion);
if ((navigator.appName.indexOf('Netscape') != -1) && (browserVersion == 4)) {isLayers = 1; isDHTML = 1;}
else {
if (document.all) {isAll = 1; isDHTML = 1;}
}}

function findDOM(objectID,withStyle) {
  var menuArea = "menuArea";
  if (withStyle == 1) {
    if (isID) { return (document.getElementById(objectID).style) ; }
    else { 
      if (isAll) { return (document.all[objectID].style); }
      else {
        if (isLayers) { return (document.layers[menuArea].layers[objectID]); }
      };
    }
   }
   else {
     if (isID) { return (document.getElementById(objectID)) ; }
     else { 
       if (isAll) { return (document.all[objectID]); }
       else {
         if (isLayers) { return (document.layers[menuArea].layers[objectID]); }
       };
     }
   }
}

function toggleList(objectID) {
  if (isAll || isID) {
    if (currList != "none") {
        domStyle = findDOM(currList,1);
        domStyle.display='none';
    }
    if (currList != objectID) {
       domStyle = findDOM(objectID,1);
       domStyle.display='block';
       currList=objectID;
    } else {
       domStyle = findDOM(objectID,1);
       domStyle.display='none';
       currList="none";
    }
  }
  return;
}

function toggleCategory(objectID) {
  if (isAll || isID) {
    if (currCategory != "none") {
        domStyle = findDOM(currCategory,1);
        domStyle.display='none';
    }
    if (currCategory != objectID) {
       domStyle = findDOM(objectID,1);
       domStyle.display='block';
       currCategory=objectID;
    } else {
       domStyle = findDOM(objectID,1);
       domStyle.display='none';
       currCategory="none";
    }
  }
  return;
}

function toggleNavigation1(objectID) {
  if (isAll || isID) {
    if (currNavigation1 != "none") {
        domStyle = findDOM(currNavigation1,1);
        domStyle.display='none';
    }
    if (currNavigation2 != "none") {
        domStyle = findDOM(currNavigation2,1);
        domStyle.display='none';
    }
    if (currNavigation1 != objectID) {
       domStyle = findDOM(objectID,1);
       domStyle.display='block';
       currNavigation1=objectID;
    } else {
       domStyle = findDOM(objectID,1);
       domStyle.display='none';
       currNavigation1="none";
    }
    currNavigation2="none";
  }
  return;
}

function toggleNavigation2(objectID) {
  if (isAll || isID) {
    if (currNavigation2 != "none") {
        domStyle = findDOM(currNavigation2,1);
        domStyle.display='none';
    }
    if (currNavigation2 != objectID) {
       domStyle = findDOM(objectID,1);
       domStyle.display='block';
       currNavigation2=objectID;
    } else {
       domStyle = findDOM(objectID,1);
       domStyle.display='none';
       currNavigation2="none";
    }
  }
  return;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function openWindow (url, winName, popWidth, popHeight) {
		var horizPos = (screen.availWidth - popWidth)/ 2;
		var vertPos = ((screen.availHeight - popHeight)/ 2) + 30;
		window.open(url, winName, "width=" + popWidth + ", height=" + popHeight + ", resizable=no, top=" + vertPos + ", left=" + horizPos + ", scrollbars=no, status=no");
}