function prepareLoad() {
	simplePreload( 'images/prana.jpg', 'images/press.jpg', 'images/prose.jpg', 'images/pranaOver.jpg', 'images/pressOver.jpg', 'images/proseOver.jpg' );
}

function simplePreload() {
	var args = simplePreload.arguments;
	document.imageArray = new Array( args.length );
	for(var i = 0; i < args.length; i++ ) {
		document.imageArray[i] = new Image;
		document.imageArray[i].src = args[i];
	}
}

function externalLinks() { 
 if (!document.getElementsByTagName) return; 
 var anchors = document.getElementsByTagName("a"); 
 for (var i=0; i<anchors.length; i++) { 
   var anchor = anchors[i]; 
   if (anchor.getAttribute("href") && 
       anchor.getAttribute("rel") == "external") 
     anchor.target = "_blank"; 
 } 
} 

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

addLoadEvent(prepareLoad);
addLoadEvent(externalLinks);