// javascript: preload image-elements for mouseover-events on an imagemap

// number of different images
var number_imgmap_images = 4

// create 1 arrays ro pre-load the images
var imgmap = new Array(number_imgmap_images);
	
for(i=0;i<number_imgmap_images;i++)
{
	imgmap[i] = new Image();
}

imgmap[0].src = "/pics/structure_norm.gif";
imgmap[1].src = "/pics/structure_scientific_ab_hi.gif";
imgmap[2].src = "/pics/structure_management_hi.gif";
imgmap[3].src = "/pics/structure_project_exec_hi.gif";

function ChangeImgmapImage(imgTagName, imgmapArrayItem)
{
	// change requested imgmap image
	window.document.images[imgTagName].src = imgmapArrayItem.src;
}