/* Check() -- Check constructor function */
function Check(element,name,checks)
{
	this.element = element;
	this.name = name;
	this.checks = checks;
	return this;
}

/* warn_empty() -- Warn that field is empty */
function warn_empty(field,field_name)
{
	field.focus();
	var msg = "A field in form is blank";
	
	switch (field.type)
	{
		case "file":
		case "text":
		case "textarea":	
		case "password":
			msg = "You did not enter a value into the following field:\n\n\t" + field_name + "\n\nThis is a required field. Please enter it now.";
			break;
		case "hidden":
			msg =  field_name;
			break;
		case "checkbox":
			msg = "You forgot to check the following box:\n\n\t" + field_name + "\n\nThis is a required option. Please check it now.";
			break;
		case "radio":
			msg = "You failed to select the following option:\n\n\t" + field_name + "\n\nThis is a required option. Please select it now.";
			break;
		case "select-one":
			msg = field_name;
			break;
		case "select-multiple":
			msg = "You failed to select options for:\n\n\t" + field_name + "\n\nThis is a required option. Please select some now.";
			break;
	}
	alert(msg);
	return false;
}

/* warn_invalid() -- Warn that field is invalid */
function warn_invalid(field,field_name,warn_message)
{
	field.focus();
	//alert("The " + field_name + " field was found invalid because of: " + "\n\n\t" + warn_message + "\n\n" + "This is a required field. Please re-enter it now.");
	alert(warn_message);
	return false;
}

/* add_check() -- Add a form check */
function add_check(element,name,checks)
{
	this.form_checks.push(new Check(element,name,checks));
}

function matchpwd()
{
	if (document.loginform.elements["password"].value != document.loginform.elements["password2"].value)
		return "Passwords do not match";
	
	return null;
}

function submitonce(theform){																													//if IE 4+ or NS 6+
	if (document.all||document.getElementById){																					//screen thru every element in the form, and hunt down "submit" and "reset"
		for (i=0;i<theform.length;i++){
			var tempobj=theform.elements[i]
			if(tempobj.type.toLowerCase()=="submit"||tempobj.type.toLowerCase()=="reset")
			tempobj.disabled=true																														//disable em
		}
	}
}

/*
	if(trim(document.add_classified.element["classified_price"].value) !="")
	{
		var checkOK ="0123456789.";
		var checkStr = t.price.value;
		var allValid = true;
		for (i = 0;  i < checkStr.length;  i++)
		{
			ch = checkStr.charAt(i);
			for (j = 0;  j < checkOK.length;  j++)
				if (ch == checkOK.charAt(j))
					break;
			
			if (j == checkOK.length)
			{
				allValid = false;
				break;
			}
		}*/
		
//		if (!allValid)
//		{
//			return "Price must only contain numerical characters and decimal.";
//			//return false;
//		}
//	}


/********************************************* 
			*DATE FORMAT
 *********************************************

	// Declaring valid date character, minimum year and maximum year
	/*var dtCh= "-";
	var minYear=1900;
	var maxYear=2100;
	var dt=document.add_art_samp.dos
			
	if (isDate(dt.value)==false) {
		dt.focus()
		return false
	}
	function isInteger(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 isDate(dtStr)
	{
		var daysInMonth = DaysArray(12)
		var pos1=dtStr.indexOf(dtCh)
		var pos2=dtStr.indexOf(dtCh,pos1+1)
		var strDay=dtStr.substring(0,pos1)
		var strMonth=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)
		for (var i = 1; i <= 3; i++) 
			{
				if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
			}
		month=parseInt(strMonth)
		day=parseInt(strDay)
		year=parseInt(strYr)
		if (pos1==-1 || pos2==-1)
			{
				alert("The date format should be : dd-mm-yyyy")
				return false
			}
		if (strMonth.length<1 || month<1 || month>12)
			{
				alert("Please enter a valid month")
				return false
			}
		if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month])
			{
				alert("Please enter a valid day")
				return false
			}
		if (strYear.length != 4 || year==0 || year<minYear || year>maxYear)
			{
				alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
				return false
			}
		if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false)
			{
				alert("Please enter a valid date")
				return false
			}
	return true
}

/*********************************************/

var image='image';//'swf'
function uploadedimgval()
{
	if( image =='image' )
	{
		if (add_regions.the_file.value.indexOf(".jpg") == -1 && add_regions.the_file.value.indexOf(".png") == -1 && add_regions.the_file.value.indexOf(".jpeg") == -1 && add_regions.the_file.value.indexOf(".gif") == -1 && add_regions.the_file.value.indexOf(".JPG") == -1 && add_regions.the_file.value.indexOf(".PNG") == -1  && add_regions.the_file.value.indexOf(".JPEG") == -1 && add_regions.the_file.value.indexOf(".GIF") == -1 )
		{
			return "Please upload .gif/.jpg/.jpeg/.png files only";
		}
	}// end of if

	return null;
}

	function myform_value (myfield) {
		myfield.value="";
	}

	var maxWidth=100;																// width to resize large images to
	var maxHeight=100;															// height to resize large images to
	var fileTypes=["gif","png","jpg","jpeg"]; // valid file types
	var outImage="previewField";										// the id of the preview image tag
	var defaultPic="spacer.gif";									  // what to display when the image is not valid

	function preview(what){
		var source=what.value;
		var ext=source.substring(source.lastIndexOf(".")+1,source.length).toLowerCase();
		for (var i=0; i<fileTypes.length; i++) if (fileTypes[i]==ext) break;
		globalPic=new Image();
		if (i<fileTypes.length) globalPic.src=source;
		else {
			globalPic.src=defaultPic;
			alert("THAT IS NOT A VALID IMAGE\nPlease load an image with an extention of one of the following:\n\n"+fileTypes.join(", "));
		}
		setTimeout("applyChanges()",200);
	}

	var globalPic;
	function applyChanges(){
		var field=document.getElementById(outImage);
		var x=parseInt(globalPic.width);
		var y=parseInt(globalPic.height);
		if (x>maxWidth) {
			y*=maxWidth/x;
			x=maxWidth;
		}
		if (y>maxHeight) {
			x*=maxHeight/y;
			y=maxHeight;
		}
		field.style.display=(x<1 || y<1)?"none":"";
		field.src=globalPic.src;
		field.width=x;
		field.height=y;
	}

/* do_check() -- Perform form validation check */
function do_check()
{
	var form = eval("document." + this.form_name);
	var checklen = this.form_checks.length;
	for (var i=0; i<checklen; i++)
	{
		// Check field
		var thefield = form.elements[this.form_checks[i].element];
		if (thefield == null) continue;

		// Check if multiple fields
		var fname = this.form_checks[i].name;
		var fields = (thefield.type == null) ? thefield : [thefield];

		// Check fields
		var flen = fields.length;
		var ftype = fields[0].type;
		var clen = this.form_checks[i].checks.length;
		switch (ftype)
		{
			case "text":
			case "file":
			case "password":
			case "textarea":
				for (var j=0; j<flen; j++)
				{
					var field = fields[j];
					var fvalue = fields[j].value;
					if (field.length == 0 || fvalue.search(/\S/) < 0) return warn_empty(field,this.form_checks[i].name);

					for (var k=0; k<clen; k++)
					{
						   var fcheck = this.form_checks[i].checks[k];
						   if (fcheck == "trim"){
								fvalue = fvalue.replace(/^\s+|\s+$/g,"");
								fields[j].value = fvalue;
								
							}
						else if (fcheck == "alpha" && fvalue.search(/^\w+$/) < 0) return warn_invalid(field,fname,"Non-alphanumeric characters");
						else if (fcheck == "num" && fvalue.search(/^\d+$/) < 0) return warn_invalid(field,fname,"Enter numeric characters");
						//else if (fcheck == "currency" && fvalue.search( /^-?[0-9\.\,]+$/ ) < 0 ) return warn_invalid(field,fname,"Non-numeric and . characters");
						else if (fcheck == "currency" && fvalue.search( /^-?[0-9\.\,]+$/ ) < 0 ) return warn_invalid(field,fname,'Only Numeric Values Allowed in "'+fname+'" Field');
						/*else if (fcheck == "currency" && fvalue.search( /\$?(\d{1,3}(\,\d{3})*|(\d+))(\.\d{0,2})?/ ) < 0 ) return warn_invalid(field,fname,"Non-numeric and . characters");*/
						else if (fcheck.search(/^alpha(.+)$/) == 0 && eval("fvalue.search(/^[\\w" + fcheck.match(/^alpha(.+)/)[1].replace(/(\W|s)/g,"\\$1") + "]+$/)") < 0) return warn_invalid(field,fname,"Cannot use " + eval("fvalue.match(/([^\\w" + fcheck.match(/^alpha(.+)/)[1].replace(/(\W|s)/g,"\\$1") + "])/)[1]") + " character")
						else if (fcheck.search(/^num(.+)$/) == 0 && eval("fvalue.search(/^[\\d" + fcheck.match(/^num(.+)/)[1].replace(/(\D|s)/g,"\\$1") + "]+$/)") < 0) return warn_invalid(field,fname,"Cannot use " + eval("fvalue.match(/([^\\d" + fcheck.match(/^num(.+)/)[1].replace(/(\D|s)/g,"\\$1") + "])/)[1]") + " character")
						else if (fcheck == "email"  && (fvalue.indexOf("@") != fvalue.lastIndexOf("@") || fvalue.search(/\w+\@[\w\-\.]+\.\w{2,4}$/) < 0)) return warn_invalid(field,fname,"Invalid Email Address");
						else if (fcheck == "email2" && (fvalue.indexOf("@") != fvalue.lastIndexOf("@") || fvalue.search(/\w+\@[\w\-\.]+\.\w{2,4}$/) < 0)) return warn_invalid(field,fname,"Invalid Email Address");
						else if (fcheck == "url" && fvalue.search(/^https*:\/\/\w[\w\-\.]{4,}/) < 0) return warn_invalid(field,fname,"Invalid URL");
						else if (fcheck.search(/^min(\d+)$/) == 0 && fvalue.length < fcheck.match(/^min(\d+)$/)[1]) return warn_invalid(field,fname,"Minimum of " + fcheck.match(/^min(\d+)$/)[1] + " characters "+fname);
						else if (fcheck.search(/^max(\d+)$/) == 0 && fvalue.length > fcheck.match(/^max(\d+)$/)[1]) return warn_invalid(field,fname,"Maximum of " + fcheck.match(/^max(\d+)$/)[1] + " characters");
						else if (fcheck.search(/^regex\/(.+)\/$/) == 0 && eval("fvalue.search(/" + fcheck.match(/^regex\/(.+)\/$/)[1] + "/)") < 0) return warn_invalid(field,fname,"Invalid format");
						else if (fcheck.search(/^func-(\w+)$/) == 0)
						{
							var invalidmsg = eval(fcheck.match(/^func-(\w+)$/)[1] + "(field)");
							if (invalidmsg != null && invalidmsg.length > 0) return warn_invalid(field,fname,invalidmsg);
						}
					}
				}
				break;
			case "checkbox":
			case "radio":
				
				var fcount = 0;
				var field = fields[0];
				for (var j=0; j<flen; j++)
				{
					if (fields[j].checked) fcount++;
				}
				if (fcount == 0) return warn_empty(field,fname);
				for (var k=0; k<clen; k++)
				{
					var fcheck = this.form_checks[i].checks[k];
					if (fcheck.search(/^min(\d+)$/) == 0 && fcount < fcheck.match(/^min(\d+)$/)[1]) return warn_invalid(field,fname,"At least " + fcheck.match(/^min(\d+)$/)[1] + " options are required");
					else if (fcheck.search(/^max(\d+)$/) == 0 && fcount > fcheck.match(/^max(\d+)$/)[1]) return warn_invalid(field,fname,"Cannot choose more than " + fcheck.match(/^max(\d+)$/)[1] + " options");
				}
				break;
			case "select-one":
			case "select-multiple":
				for (var j=0; j<flen; j++)
				{
					var field = fields[j];
					if (field.type == "select-one" && field.selectedIndex == 0) return warn_empty(field,fname);
					else if (field.type == "select-multiple" && clen > 0)
					{
						var fcount = 0;
						for (var k=0; k<field.options.length; k++)
						{
							if (field.options[k].selected) fcount++;
						}
						for (var k=0; k<clen; k++)
						{
							var fcheck = this.form_checks[i].checks[k];
							if (fcheck.search(/^min(\d+)$/) == 0 && fcount < fcheck.match(/^min(\d+)$/)[1]) return warn_invalid(field,fname,"Please select atleast "+ fcheck.match(/^min(\d+)$/)[1] +" "+fname);
							else if (fcheck.search(/^max(\d+)$/) == 0 && fcount > fcheck.match(/^max(\d+)$/)[1]) return warn_invalid(field,fname,"A user can only select maximum of " + fcheck.match(/^max(\d+)$/)[1] + " choices.");
						}
					}
				}
				break;
		}
	}
	return true;
}

/* FValidate -- FValidate constructor function */
function FValidate(form_name)
{
	this.form_checks = new Array();
	this.form_name = form_name;
	this.add_check = add_check;
	this.check = do_check;
}







/* ]]> */



/*
<script type="text/javascript" src="fvalidate.js"></script>

<form name="loginform" action="" method="post" onsubmit='return fvalid_login.check(this)'>

var fvalid_login = new FValidate("loginform");

fvalid_login.add_check("payableto","Payable To",["trim"]);
fvalid_login.add_check("address","Address",["trim","min5","max40"]);
fvalid_login.add_check("city","City",["trim","min3","max30"]);
fvalid_login.add_check("province","State / Province",["trim","min2","max25"]);
fvalid_login.add_check("zip","Zip",["trim"]);
fvalid_login.add_check("price","Price",["trim","currency","min1","max11"]); 
fvalid_login.add_check("country","Country",["trim"]);
fvalid_login.add_check("siteurl","Site URL",["trim","url","max90"]);
	
fvalid_login.add_check("name","Contact Name",["trim","min5","max32"]);
fvalid_login.add_check("email","Email Address",["trim","email","max45"]);
fvalid_login.add_check("terms","Terms and Conditions",["trim"]);

fvalid_login.add_check("password","Password",["trim","alpha","min5","max20"]);
fvalid_login.add_check("password2","Confirm Password",["trim","alpha","min5","max20","func-matchpwd"]);	// loginform
fvalid_login.add_check("the_file","Property Images",["trim","func-uploadedimgval"]);// signupform
*/