//---------------------------------------------------------------------------
// TAB FUNCTIONS

<!-- tab box coordinates -->

<!-- on click or off (tab up) -->
var current = "1";
function tabSwitch(id){
    if(!document.getElementById) return false;
    var div = document.getElementById("tabpage"+id);
    var navdiv = document.getElementById("tabitem"+id);
    var curDiv = document.getElementById("tabpage"+current);
    var curNavdiv = document.getElementById("tabitem"+current);
    curDiv.style.display = "none";
	curNavdiv.style.background = "transparent";
    div.style.display = "block";
    if(id==1){
    	navdiv.style.background = "transparent url(http://www.phaseonecg.com/images/nav_tab_altv2.gif) 0 -74px no-repeat";
    }
    else if(id==2){
	    navdiv.style.background = "transparent url(http://www.phaseonecg.com/images/nav_tab_altv2.gif) -120px -74px no-repeat";
	}
	navdiv.blur();
    current = id;
}

<!-- on mouse over (tab up) -->
function tabHover(hoverid){
	if(!document.getElementById) return false;
	var hoverdiv = document.getElementById("tabitem"+hoverid);
	var curHover = window["current"];
	if (hoverid!=curHover){
		if(hoverid==1){
			hoverdiv.style.background = "transparent url(http://www.phaseonecg.com/images/nav_tab_altv2.gif) 0 -37px no-repeat";
		}
		else if(hoverid==2){
			hoverdiv.style.background = "transparent url(http://www.phaseonecg.com/images/nav_tab_altv2.gif) -120px -37px no-repeat";
		}
	}
}

<!-- on mouse out (tab down) -->
function tabOut(outid){
	if(!document.getElementById) return false;
	var outdiv = document.getElementById("tabitem"+outid);
	var curOut = window["current"];
	if (outid!=curOut){
		if(outid==1){
			outdiv.style.background = "transparent url(http://www.phaseonecg.com/images/nav_tab_altv2.gif) 0 0 no-repeat";
		}
		else if(outid==2){
			outdiv.style.background = "transparent url(http://www.phaseonecg.com/images/nav_tab_altv2.gif) -120px 0 no-repeat";
		}
	}
}

<!-- tab box functions -->

function fncTabOver(oTab) {
  if (oTab.className != "clsTabSelected") {
    fncTabSaveClass(oTab);
    oTab.className = "clsTabHover";
  }
  return true;
}

function fncTabOut(oTab) {
  fncTabRestoreClass(oTab);
  return true;
}

function fncTabSaveClass(oTab) {
  oTab._className = oTab.className;
  return true;
}

function fncTabRestoreClass(oTab) {
  if (oTab.className == "clsTabHover") {
    oTab.className = oTab._className;
  }
  return true;
}


// ROLLOVER SCRIPT

<!--
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 MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->