function rolloverImages() {
	
	if(document.images) {
	shadow1Green=new Image;
	shadow1Blue=new Image;
	shadow2Green=new Image;
	shadow2Blue=new Image;
	shadow3Green=new Image;
	shadow3Blue=new Image;
	shadow4Green=new Image;
	shadow4Blue=new Image;
	homeNotactive=new Image;
	homeActive=new Image;
	whatNotactive=new Image;
	whatActive=new Image;
	researchNotactive=new Image;
	researchActive=new Image;
	eventsNotactive=new Image;
	eventsActive=new Image;
	
	homeNotactive.src="images/img_home.gif";
	homeActive.src="images/img_home_active.gif";
	
	whatNotactive.src="images/img_what.gif";
	whatActive.src="images/img_what_active.gif";
	
	researchNotactive.src="images/img_research.gif";
	researchActive.src="images/img_research_active.gif";
	
	eventsNotactive.src="images/img_events.gif";
	eventsActive.src="images/img_events_active.gif";
	
	shadow1Green.src="images/greenshadow132.gif";
	shadow1Blue.src="images/blueshadow132.gif";
	shadow2Green.src="images/greenshadow142.gif";
	shadow2Blue.src="images/blueshadow142.gif";
	shadow3Green.src="images/greenshadow156.gif";
	shadow3Blue.src="images/blueshadow156.gif";
	shadow4Green.src="images/greenshadow164.gif";
	shadow4Blue.src="images/blueshadow164.gif";
	
	}
	
	else {
	shadow1Green="";
	shadow1Blue="";
	document.shadow1="";
	shadow2Green="";
	shadow2Blue="";
	document.shadow2="";
	shadow3Green="";
	shadow3Blue="";
	document.shadow3="";
	shadow4Green="";
	shadow4Blue="";
	document.shadow4="";
	
	homeNotactive="";
	homeActive="";
	document.home="";
	
	whatNotactive="";
	whatActive="";
	document.what="";
	
	researchNotactive="";
	researchActive="";
	document.research="";
	
	eventsNotactive="";
	eventsActive="";
	document.events="";
	}
}