function newimage (imagename,filename) {        
     document.images[imagename].src = filename;}
	 
	 
function jumpPage(newLoc) {
			newPage = newLoc.options[newLoc.selectedIndex].value
	
			if (newPage != "") {
				window.location.href = newPage
			}
		}

<!-- window for abbreviations -->

function Start(page) {
OpenWin = this.open(page, "CtrlWindow", "toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=yes,height=350,width=400");
}

<!-- biography/personal details -->

//global variable for error flag
var errfound = false;
//function to validate by length
function ValidLength(item, len) {
   return (item.length >= len);
}
//function to validate an email address
function ValidEmail(item) {
   if (!ValidLength(item, 5)) return false;
   if (item.indexOf ('@', 0) == -1) return false;
   return true;
}
// display an error alert
function error(elem, text) {
// abort if we already found an error
   if (errfound) return;
   window.alert(text);
   elem.select();
   elem.focus();
   errfound = true;
}
// main validation function
function Validatebiography() {
   errfound = false;
   if (!ValidLength(document.form.name.value,1))
      error(document.form.name,"Please enter your name");
   if (!ValidLength(document.form.email.value,1))
      error(document.form.email,"Please enter your email");
   return !errfound; /* true if there are no errors */
}


<!-- catalogue details -->

//global variable for error flag
var errfound = false;
//function to validate by length
function ValidLength(item, len) {
   return (item.length >= len);
}
//function to validate an email address
function ValidEmail(item) {
   if (!ValidLength(item, 5)) return false;
   if (item.indexOf ('@', 0) == -1) return false;
   return true;
}
// display an error alert
function error(elem, text) {
// abort if we already found an error
   if (errfound) return;
   window.alert(text);
   elem.select();
   elem.focus();
   errfound = true;
}
// main validation function
function Validatecatalogue() {
   errfound = false;
   if (!ValidLength(document.form.name.value,1))
      error(document.form.name,"Please enter your name");
   if (!ValidLength(document.form.email.value,1))
      error(document.form.email,"Please enter your email");
   if (!ValidLength(document.form.worktitle.value,1))
      error(document.form.worktitle,"Please enter title of work");
   if (!ValidLength(document.form.year.value,1))
      error(document.form.year,"Please enter year of composition");
   if (!ValidLength(document.form.duration.value,1))
      error(document.form.duration,"Please enter duration");
   if (!ValidLength(document.form.instrumentation.value,1))
      error(document.form.instrumentation,"Please enter instrumentation");
   return !errfound; /* true if there are no errors */
}