var myHeight, myWidth;
function setHeight() {
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  
  intWidth = parseInt(myWidth);
  intHeight = parseInt(myHeight);
  
  w = document.getElementById("wrapper");
  if(parseInt(w.offsetHeight) < intHeight) {
    h = document.getElementById("header");
    f = document.getElementById("footer");
    c = document.getElementById("content");
    hh = parseInt(h.offsetHeight);
    fh = parseInt(f.offsetHeight);
    c.style.height = (intHeight-hh-fh-51) + "px"; // 51px for the bottom padding of the content div
  }
}

addEvent(window, "load", setHeight);
addEvent(window, "resize", setHeight);


var firstEl;

function validateForm(frm) {
  errs = "";
  firstEl = null;
  els = frm.elements;
  for(i=0; i<els.length; i++) {
    if(els[i].id == "req")
      errs += checkVal(els[i]);
  }
  if(errs != "") {
    alert("Please make the following changes:\n\n" + errs);
    if(firstEl)
      firstEl.focus();
    return false;
  }
  return true;
}

function checkVal(el) {
  if(el) {
    if(((el.tagName == "INPUT" || el.tagName == "TEXTAREA") && el.value == "")
       || (el.tagName == "SELECT" && el.options[el.selectedIndex].value == "")) {
      if(firstEl == null)
        firstEl = el;
      return "- " + el.title + "\n";
    }
  }
  return "";
}

/** MOUSE OVER EFFECTS **/
function preloadImgs() {
  imgs = document.images;
  for(i=0; i<imgs.length; i++) {
    src = imgs[i].src;
    if(src.indexOf('_off') != -1) {
      document.onImg = new Image();
      document.onImg.src = src.replace('_off', '_on');
      
      addEvent(imgs[i], "mouseover", toggleImgOn);
      addEvent(imgs[i], "mouseout", toggleImgOff);
    }
  }
}

addEvent(window, "load", preloadImgs);

function addEvent( obj, type, fn ){  // the add event function
  if (obj.addEventListener) obj.addEventListener( type, fn, false );
  else if (obj.attachEvent) {
    obj["e"+type+fn] = fn;
    obj[type+fn] = function() {
      obj["e"+type+fn]( window.event );
    };
    obj.attachEvent( "on"+type, obj[type+fn] );
  }
}

function toggleImg() {
  src = this.src;
  if(src.indexOf('_off') != -1)
    this.src = src.replace('_off', '_on');
  else if(src.indexOf('_on') != -1)
    this.src = src.replace('_on', '_off');
}

function toggleImgOn() {
  src = this.src;
  if(src.indexOf('_off') != -1)
    this.src = src.replace('_off', '_on');
}

function toggleImgOff() {
  src = this.src;
  if(src.indexOf('_on') != -1)
    this.src = src.replace('_on', '_off');
}

function goTo(u) {
  window.location = u;
}

function openPopupWindow(url, width, height, scrolling, name) {
  if (!width) width = 350;
  if (!height) height = 350;
  if (!scrolling) scrolling = "no"; 
  if (!name) name = "win"+Math.round(Math.random()*1000); 
  
  features = "width="+width+","
           + "height="+height+","
           + "toolbar=no,"
           + "location=no,"
           + "status=no,"
           + "menubar=no,"
           + "scrollbars="+scrolling+","
           + "top=50,"//+(window.screen.height-height)/2+","
           + "left=50";//+(window.screen.width-width)/2;
  window.open(url,name,features);
}