// JavaScript Document

function newImage(arg) {
  if (document.images) {
     rslt = new Image();
     rslt.src = arg;
     return rslt;
  }
}

function changeImages() {
  if (document.images && (preloadFlag == true)) {
     for (var i=0; i<changeImages.arguments.length; i+=2) {
        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
     }
  }
}

var preloadFlag = false;
function preloadImages() {
  if (document.images) {
     clinic_landing_roll = newImage("assets/images/clinic_landing_roll.gif");
     equipment_landing_roll = newImage("assets/images/equipment_landing_roll.gif");
	 hospital_landing_roll = newImage("assets/images/hospital_landing_roll.gif");
     pharmacy_landing_roll = newImage("assets/images/pharmacy_landing_roll.gif");
	 radiology_landing_roll = newImage("assets/images/radiology_landing_roll.gif");
     surgery_landing_roll = newImage("assets/images/surgery_landing_roll.gif");
     preloadFlag = true;
  }
}

function setBodyId(id)
{
    returnObjById('bodyTag').setAttribute('id',id);
}
function returnObjById( id ) 
{ 
    if (document.getElementById) 
        var returnVar = document.getElementById(id); 
    else if (document.all) 
        var returnVar = document.all[id]; 
    else if (document.layers) 
        var returnVar = document.layers[id]; 
    return returnVar; 
}