var initSearchValue = "Search";

function validateSearch(isFromClick) {
	var searchField = document.getElementById('strSearch');
	var frmSearch = document.getElementById('frmSearch');
		
	if(searchField.value == "" || searchField.value == " " || searchField.value == null || searchField.value == initSearchValue) {
		alert("Please enter a search term");
	}else{
		frmSearch.submit();
	}
}

function enterSubmit(thisEvent) {
	var keycode;
			
	if (window.event) {
		//ie
		keycode = window.event.keyCode;
	} else if (thisEvent) {
		//other
		keycode = thisEvent.which;
	}
			
	if(keycode == 13) {
		validateSearch(false);
	}
}