function validForm(frmMain) {
			
			if (frmMain.year.value == "" & frmMain.keyword.value == "" )
				{
					alert("Please enter your search information");
					return false
				}
				
							return true
				}	
			
				
		/////////////// utility functions to keep out bad data //////////////////////////////////////////////
		// strip out bad characters
		
		function stringFilter (input) {
		s = input.value;
		filteredValues = "ABCDEFGHIJKLMNOPQRSTUVWXYZascdefghijklmnopqrstuvwxyz";     // Characters stripped out
		var i;
		var returnString = "";
		for (i = 0; i < s.length; i++) {  // Search through string and append to unfiltered values to returnString.
		var c = s.charAt(i);
		if (filteredValues.indexOf(c) == -1) returnString += c;
		}
		input.value = returnString;
		}
		
		
		function stringFilterNumber (input) {
		s = input.value;
		filteredValues = "1234567890";     // Characters stripped out
		var i;
		var returnString = "";
		for (i = 0; i < s.length; i++) {  // Search through string and append to unfiltered values to returnString.
		var c = s.charAt(i);
		if (filteredValues.indexOf(c) == -1) returnString += c;
		}
		input.value = returnString;
		}
			
		function setsearch_keyword() {
			document.frmMain.searchtype.value="keyword";
			document.frmMain.year.value="";
		}
		
		function setsearch_year() {
			document.frmMain.searchtype.value="year";
			document.frmMain.keyword.value="";
		}
	
		function onInit() {
			document.frmMain.searchtype.value="";
			document.frmMain.keyword.value="";
		}