<!-- Vignette V6 Wed May 02 09:25:49 2007 -->


//this function checks verifies that atleast one form field has valid search term that is 2 or more characters in 
//length.  A one character search is not permitted.  
//Title: validateSearch_c
//Created By: Tim Murnane -- Idea Integration 6/2001
//Requires validatecommonc.js for isEmpty() function

function isValidSearch(strText) {	
	if (!isEmpty(strText)) {
		titleString = (strText);
		titleString = titleString.replace(' and ', " ");
		titleString = titleString.replace(' or ', " ");
		titleString = titleString.replace(' not ', " ");
	
		inpRE = /(\s*\w{1,}[^'""\s]\s*)|('\s*\w{1,}[^'""\s]\s*')|(""\s*\w{1,}[^'""\s]\s*"")/;
		result = inpRE.exec(strText); 
		if (result==null) 
			{
			return false;
			}
		return true;	
		}
	}
	
function validateSearch()	{
	var msg=""
	var valid=true
	

if (isEmpty(document.frmAdvSearch.txtProductTitle.value)  
	&& isEmpty(document.frmAdvSearch.txtAuthorName.value) 
	&& isEmpty(document.frmAdvSearch.txtProductISBN.value) 
	&& isEmpty(document.frmAdvSearch.txtProductKeywords.value)){
	msg = msg + "\n * Must enter search term in at least one of the following fields: Title, Author, ISBN or Keywords.\n";
	valid = false;
	}

//title field	
if (!isEmpty(document.frmAdvSearch.txtProductTitle.value)){
	if (!isValidSearch(document.frmAdvSearch.txtProductTitle.value)){
			msg = msg + "\n* Illegal search terms were entered in the Title field.\n" +
			"  Entries must be at least two valid characters.\n";
			valid = false;
		}
	}
	
	
//author field
if (!isEmpty(document.frmAdvSearch.txtAuthorName.value)){
	if (!isValidSearch(document.frmAdvSearch.txtAuthorName.value)){
msg = msg + "\n* Illegal search terms were entered in the Author field.\n" +
			"  Entries must be at least two valid characters.\n";
			valid = false;
		}
	}
//ISBN field
if (!isEmpty(document.frmAdvSearch.txtProductISBN.value)){
	if (!isValidSearch(document.frmAdvSearch.txtProductISBN.value)){
			msg = msg + "\n* Illegal search terms were entered in the ISBN field.\n" +
			"  Entries must be at least two valid characters.\n";
			valid = false;
		}
	}
//Keyword field
if (!isEmpty(document.frmAdvSearch.txtProductKeywords.value)){
	if (!isValidSearch(document.frmAdvSearch.txtProductKeywords.value)){
		msg = msg + "\n* Illegal search terms were entered in the Keyword field.\n" +
		"  Entries must be at least two valid characters.\n";
		valid = false;
		}
	}
//Year From field
if (!isEmpty(document.frmAdvSearch.intPublicationYearFrom.value)){
	if ((isNaN(document.frmAdvSearch.intPublicationYearFrom.value)) || 
		(document.frmAdvSearch.intPublicationYearFrom.value.length < 4)) {
		msg=msg + "\n* Publication Year 'From' entry must four be numeric characters.\n";
		valid=false;
	}
}
	
if (!isEmpty(document.frmAdvSearch.intPublicationYearThru.value)){
	if ((isNaN(document.frmAdvSearch.intPublicationYearThru.value)) || 
		(document.frmAdvSearch.intPublicationYearThru.value.length < 4)) {
		msg=msg + "\n* Publication Year 'To' entry must four be numeric characters.\n";
		valid=false;
	}
}
	

if (msg.length > 0 ) {
		msg = 'Please address the following errors and try again:\n' + msg + '\n\n';
		valid=false;
					}

if (valid == true) {
		return true;
		}
	alert(msg);
	return false;   
	
}

function validateLeftNav(){

//var errMsg;
var Valid = true;
var srchCriteria = document.frmSearch.Criteria1Val.value;
if (!isValidSearch(srchCriteria)){
	alert("\n* Illegal search terms were entered in the Search For field.\n" +
			"  Entries must be at least two valid characters.\n");
	Valid = false;
	}		
return Valid;
}