function classChange(element,elementname,newclass) {
	var theElement = elementname;
	var existingClass = element.className;
	if (theElement == "annmeeting") {
		if (existingClass == "vis") {
			annmeeting.className = "invis";
			annmeetingarrow.src = 'images/d_downarrow.gif';
		} else {
		annmeeting.className = "vis";
		annmeetingarrow.src = 'images/d_uparrow.gif';
		}
	} else {
		annmeeting.className = "invis";
		annmeetingarrow.src = 'images/d_downarrow.gif';
	}
	if (theElement == "awardopps") {
		if (existingClass == "vis") {
			awardopps.className = "invis";
			awardoppsarrow.src = 'images/d_downarrow.gif';
		} else {
		awardopps.className = "vis";
		awardoppsarrow.src = 'images/d_uparrow.gif';
		}
	} else {
		awardopps.className = "invis";
		awardoppsarrow.src = 'images/d_downarrow.gif';
	}
	if (theElement == "execcom") {
		if (existingClass == "vis") {
			execcom.className = "invis";
			execcomarrow.src = 'images/d_downarrow.gif';
		} else {
		execcom.className = "vis";
		execcomarrow.src = 'images/d_uparrow.gif';
		}
	} else {
		execcom.className = "invis";
		execcomarrow.src = 'images/d_downarrow.gif';
	}
	if (theElement == "classicorgs") {
		if (existingClass == "vis") {
			classicorgs.className = "invis";
			classicorgsarrow.src = 'images/d_downarrow.gif';
		} else {
		classicorgs.className = "vis";
		classicorgsarrow.src = 'images/d_uparrow.gif';
		}
	} else {
		classicorgs.className = "invis";
		classicorgsarrow.src = 'images/d_downarrow.gif';
	}
        if (theElement == "scholarships") {
		if (existingClass == "vis") {
			scholarships.className = "invis";
			scholarshipsarrow.src = 'images/d_downarrow.gif';
		} else {
		scholarships.className = "vis";
		scholarshipsarrow.src = 'images/d_uparrow.gif';
		}
	} else {
		scholarships.className = "invis";
		scholarshipsarrow.src = 'images/d_downarrow.gif';
	}
        if (theElement == "chistory") {
		if (existingClass == "vis") {
			chistory.className = "invis";
			chistoryarrow.src = 'images/d_downarrow.gif';
		} else {
		chistory.className = "vis";
		chistoryarrow.src = 'images/d_uparrow.gif';
		}
	} else {
		chistory.className = "invis";
		chistoryarrow.src = 'images/d_downarrow.gif';
	}
        if (theElement == "membership") {
		if (existingClass == "vis") {
			membership.className = "invis";
			membershiparrow.src = 'images/d_downarrow.gif';
		} else {
		membership.className = "vis";
		membershiparrow.src = 'images/d_uparrow.gif';
		}
	} else {
		membership.className = "invis";
		membershiparrow.src = 'images/d_downarrow.gif';
	}
	if (theElement == "pubs") {
		if (existingClass == "vis") {
			pubs.className = "invis";
			pubsarrow.src = 'images/d_downarrow.gif';
		} else {
		pubs.className = "vis";
		pubsarrow.src = 'images/d_uparrow.gif';
		}
	} else {
		pubs.className = "invis";
		pubsarrow.src = 'images/d_downarrow.gif';
	}
	if (theElement == "placement") {
		if (existingClass == "vis") {
			placement.className = "invis";
			placementarrow.src = 'images/d_downarrow.gif';
		} else {
		placement.className = "vis";
		placementarrow.src = 'images/d_uparrow.gif';
		}
	} else {
		placement.className = "invis";
		placementarrow.src = 'images/d_downarrow.gif';
	}
	if (theElement == "resources") {
		if (existingClass == "vis") {
			resources.className = "invis";
			resourcesarrow.src = 'images/d_downarrow.gif';
		} else {
		resources.className = "vis";
		resourcesarrow.src = 'images/d_uparrow.gif';
		}
	} else {
		resources.className = "invis";
		resourcesarrow.src = 'images/d_downarrow.gif';
	}
	if (theElement == "volunteer") {
		if (existingClass == "vis") {
			volunteer.className = "invis";
			volunteerarrow.src = 'images/d_downarrow.gif';
		} else {
		volunteer.className = "vis";
		volunteerarrow.src = 'images/d_uparrow.gif';
		}
	} else {
		volunteer.className = "invis";
		volunteerarrow.src = 'images/d_downarrow.gif';
	}
	
 }
	
function doPreload() {
	var imagenum = Math.round(Math.random() * 4); /* needs to be current number of bgs */
	image_one.src='images/bg' + imagenum + '.jpg';
	var the_img = new Array('images/bg0.jpg',
  'images/bg1.jpg',
  'images/bg2.jpg',
  'images/bg3.jpg',
  'images/bg4.jpg');
	preloadimg(the_img);
}

function preloadimg(the_img_array) {
	for(var loop = 0; loop < the_img_array.length; loop++)
	{
   		var an_image = new Image();
		  an_image.src = the_img_array[loop];
	}
}