var dtCh= "/";
var minYear=1900;
var maxYear=2005;
var frmFields = new Array();
var efields;
var nefields;
	
String.prototype.trim = function() {
	return this.replace(/^\s+|\s+$/g,"");
}
String.prototype.ltrim = function() {
	return this.replace(/^\s+/,"");
}
String.prototype.rtrim = function() {
	return this.replace(/\s+$/,"");
}

function frmCanContinue(nspc)
{
	var form = document.mainform;
	var extraerror = '';
	if(!form) return;
	
	var waserror = false;
	var cancontinue = false;
	if(nspc!="") nspc+="$";
	
	var rfields = form[nspc+'frm_required'];
	if(!rfields) rfields = form['frm_required'];	
	rfields=rfields.value.split(',');
	
	efields = new Array();
	nefields = new Array();
	var grps = new Array();
	var negrps = new Array();
	for(var i=0;i<rfields.length;i++) {
		var fld = rfields[i].split('|');
		if(form[nspc+fld[0]]) {
			var cfld = form[nspc+fld[0]];
			var val = frmGetValue(cfld);
			if(val.trim()=='') 
			{
				if(fld.length>1) grps.push(fld[1]);
				else efields.push(fld[0]);
			} else {
				if(fld.length>1) {
					grps.push(fld[1]);
					negrps.push(fld[1]);
				} else nefields.push(fld[0]);
			}
		}
	}
	for(var j=0;j<grps.length;j++) {
		var ne = false;
		for(var k=0;k<negrps.length;k++) 
			if(negrps[k]==grps[j]) 
				ne = true;
		
		if(!ne) {
			for(var i=0;i<rfields.length;i++) {
				var fld = rfields[i].split('|');
				if(fld.length>1) {
					if(fld[1]==grps[j]) 
					{
						efields.push(fld[0]);
						efields.push(fld[1]);
					}
				}
			}
		}
	}
	
	extraerror = jlocErrorCheck(efields,nefields,nspc);
	if(efields.length==0) 
	{
		cancontinue = jlocContinue(nspc);
		waserror = false;
	} else waserror = true;
	
	var obj;
	for(i=0;i<nefields.length;i++) {
		obj = frmGet('txt'+nspc+nefields[i])
		if(obj) obj.className = 'formT';
	}
	for(i=0;i<efields.length;i++) {
		obj = frmGet('txt'+nspc+efields[i])
		if(obj) obj.className = 'formTR';
		obj = frmGet('txtassigncode'+nspc+efields[i])
		if(obj) obj.className = 'formTR';
	}

		
	if(waserror)
		alert(extraerror + 'Please correct the fields shown in red.\nThey are required to proceed');
			
	return (!waserror) && cancontinue;	
}

function frmGet(nam)
{
	var obj = $(nam);
	if(!obj) {
			var re=new RegExp('[$]','g');
			nam=nam.replace(re,'_');
			obj = $(nam);
	}
	return obj;
}

function frmIsInteger(s) { 
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function _stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function _daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function _DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function frmIsDate(dtStr){
	var daysInMonth = _DaysArray(12);
	var pos1=dtStr.indexOf(dtCh);
	var pos2=dtStr.indexOf(dtCh,pos1+1);
	var strMonth=dtStr.substring(0,pos1);
	var strDay=dtStr.substring(pos1+1,pos2);
	var strYear=dtStr.substring(pos2+1);
	strYr=strYear;
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1);
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1);	
	month=parseInt(strMonth);
	day=parseInt(strDay);
	year=parseInt(strYr);
	if (pos1==-1 || pos2==-1){
		return ("The date format should be : mm/dd/yyyy");
	}
	if (strMonth.length<1 || month<1 || month>12){
		return ("Please enter a valid month");
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>_daysInFebruary(year)) || day > daysInMonth[month]){
		return ("Please enter a valid day");
	}
	if (strYear.length != 4 || year==0 || year<minYear || (year>maxYear && maxYear!=0)){
		if(maxYear==0)
			return ("Please enter a valid 4 digit year greater than "+minYear);
		else
			return ("Please enter a valid 4 digit year between "+minYear+" and "+maxYear);
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || frmIsInteger(_stripCharsInBag(dtStr, dtCh))==false){
		return ("Please enter a valid date");
	}
return '';
}

function frmAddField (form, fieldType, fieldName, fieldValue) {
  if (document.getElementById) {
    var input = document.createElement('INPUT');
      if (document.all) { // what follows should work 
                          // with NN6 but doesn't in M14
        input.type = fieldType;
        input.name = fieldName;
        input.value = fieldValue;
      }
      else if (document.getElementById) { // so here is the
                                          // NN6 workaround
        input.setAttribute('type', fieldType);
        input.setAttribute('name', fieldName);
        input.setAttribute('value', fieldValue);
      }
    form.appendChild(input);
    return input;
  }
}

function frmGetElement(name)
{
	if(frmFields.length>0) {
		var fldlst = new Array();
		for(var i=0;i<frmFields.length;i++) {
			if(frmFields[i][0]==name) {
				fldlst.push(frmFields[i][1]);
			}
		}

		if(fldlst.length==1) return fldlst[0];
		if(fldlst.length>1) return fldlst;
	} else {
		var form = document.mainform;
		if(form) {
			if(form[name]) {
				if(form[name].type)
					return form[name];
				if(form[name].length) {
					if(form[name][0].type=="checkbox" || form[name][0].type=="radio")
						return form[name];
				}
			}
		}
	}
	return '';
}

function frmGetValue(var1)
{
	var val='';
	if(var1.length) {
		if(var1.type) {
			if(var1.type=="select-one") 
				if(var1.selectedIndex>-1)				
					val = var1.options[var1.selectedIndex].value;
		} else {
			if(var1[0].type=="checkbox" || var1[0].type=="radio") {
				for(var t=0;t<var1.length;t++) 
					if(var1[t].checked) val+=','+var1[t].value;
				if(val!='') val = val.substr(1,val.length-1);
			} 
		}
	} else {
		if(var1.type=="select-one") 
			if(var1.selectedIndex>-1)				
				val = var1.options[var1.selectedIndex].value;		
		if(var1.type=="checkbox" || var1.type=="radio") {
			if(var1.checked)
				val = var1.value;
		} else val = var1.value;
	}
				
	return val;
}

function frmSetValue(var1,val)
{
	if(var1.length) {
		if(var1.type) {
			if(var1.type=="select-one") 
				var1.value = val;
		} else {
			if(var1[0].type=="checkbox" || var1[0].type=="radio") {
				val = ','+val+',';
				for(var t=0;t<var1.length;t++) 
					var1[t].checked = (val.indexOf(','+var1[t].value+',')>=0);									
			} 
		}
	} else var1.value = val;
}

function frmBuildFieldArray()
{
	var form = document.mainform;
	if(!form) return;	
	
	for(var i=0;i<form.elements.length;i++) 
	{
		frmFields.push(new Array(form.elements[i].name,form.elements[i]));		
	}
}

function frmEnableAll()
{
	var form = document.mainform;
	if(!form) return;	
	
	for(var i=0;i<form.elements.length;i++) 
	{
		form.elements[i].disabled = false;
	}
}