function SetUsertype(type){
    /* on click the script appends the image to the exiting elements whose id is footer.*/
    var footerdiv = document.getElementById("footer");
    var url = "http://wwwtest9.waikato.ac.nz/cgi-bin/uwaat-tracking.pl";
        url = url+"?"+type;
    var userTypeImg = document.createElement("img");
        userTypeImg.setAttribute("src", url);
        userTypeImg.setAttribute("alt", "");
        footerdiv.appendChild(userTypeImg);
    }  

function addEvent(obj, evType, fn){
 if (obj.addEventListener){
    obj.addEventListener(evType, fn, true);
    return true;
 } else if (obj.attachEvent){
    var r = obj.attachEvent("on"+evType, fn);
    return r;
 } else {
    return false;
 }
}

function searchState(state) {

	var searchBox = document.getElementById('search');
	var emptyRegEx = /^\s*$/i; // if is empty or just spaces	

	if (state == "blur") {
	

	
		if (searchBox.value.match(emptyRegEx)) {
		
			searchBox.value = "Search";
			searchBox.style.color = "#999"; 
		
		} 
	}
    else if (state == 'focus') {
	
		var searchRegExp = /^Search$/i
			
		if (searchBox.value.match(searchRegExp)){
		
			searchBox.style.color = "#333";
			searchBox.value = "";
		
		} 
	
	
	
	}
	else {
	}

}