BIOCurr = new Image();
BIOCurr.src =  "../shared/images/nav_bio_2.gif";
CONCEPTCurr = new Image();
CONCEPTCurr.src = "../shared/images/nav_concept_2.gif";
INSTCurr = new Image();
INSTCurr.src = "../shared/images/nav_inst_2.gif";
DOCCurr = new Image();
DOCCurr.src = "../shared/images/nav_doc_2.gif";

BIOOff = new Image();
BIOOff.src =  "../shared/images/nav_bio_1.gif";
CONCEPTOff = new Image();
CONCEPTOff.src = "../shared/images/nav_concept_1.gif";
INSTOff = new Image();
INSTOff.src = "../shared/images/nav_inst_1.gif";
DOCOff = new Image();
DOCOff.src = "../shared/images/nav_doc_1.gif";


function resetAll(imgname) {
top.nav_four.document.BIO.src = BIOOff.src;
top.nav_four.document.CONCEPT.src = CONCEPTOff.src;
top.nav_four.document.INST.src = INSTOff.src
top.nav_four.document.DOC.src = DOCOff.src

currPage = imgname;

top.nav_four.document[imgname].src = eval(imgname + "Curr.src");

}