// Value-Validation (c) Henrik Petersen / NetKontoret
// Explained at www.echoecho.com/jsforms.htm
// Please do not remove the this line and the two lines above.
//if (emailvalidation(Email,"Illegal E-mail")==false) {Email.focus(); return false;};
//if (valuevalidation(Value,0,5,"Value MUST be in the range 0-5")==false) {Value.focus(); return false;};
//if (digitvalidation(Digits,3,4,"You MUST enter 3 or 4 integer digits","I")==false) {Digits.focus(); return false;};
//if (emptyvalidation(document.getElementById("fld_bkn[bkn_boekdatum_van]"),		"aankomstdatum is verplicht (1: datums)")==false) {return false;};

function decimalvalidation(entered,alertbox) {
	with (entered){
	    if (!value.match(/^\d+$|^\d+\.\d+$/ ) ) {
			if (alertbox!="") {
				alert(alertbox);
			} 
			return false;
		} else {
			return true;
		}
	}
}

function emailvalidation(entered, alertbox){
// E-mail-Validation (c) Henrik Petersen / NetKontoret
// Explained at www.echoecho.com/jsforms.htm
// Please do not remove the this line and the two lines above.
	with (entered) {
		style.backgroundColor = "white";
		apos=value.indexOf("@");
		dotpos=value.lastIndexOf(".");
		lastpos=value.length-1;
		if (apos<1 || dotpos-apos<2 || lastpos-dotpos>3 || lastpos-dotpos<2) {
			if (alertbox) {
				alert(alertbox);
				focus();
				style.backgroundColor = "#dcdcdc";
			}
			return false;
		} else {
			return true;
		}
	}
}

function valuevalidation(entered, min, max, alertbox, datatype)
{
// Value-Validation (c) Henrik Petersen / NetKontoret
// Explained at www.echoecho.com/jsforms.htm
// Please do not remove the this line and the two lines above.
with (entered)
{
checkvalue=parseFloat(value);
if (datatype)
  {smalldatatype=datatype.toLowerCase();
   if (smalldatatype.charAt(0)=="i") {checkvalue=parseInt(value)};
  }
if ((parseFloat(min)==min && checkvalue<min) || (parseFloat(max)==max && checkvalue>max) || value!=checkvalue)
{if (alertbox!="") {alert(alertbox);} return false;}
else {return true;}
}
}

function digitvalidation(entered, min, max, alertbox, datatype){
// Digit-Validation (c) Henrik Petersen / NetKontoret
// Explained at www.echoecho.com/jsforms.htm
// Please do not remove the this line and the two lines above.
	with (entered){
		checkvalue=parseFloat(value);
		if (datatype){
			smalldatatype=datatype.toLowerCase();
			if (smalldatatype.charAt(0)=="i") {
				checkvalue=parseInt(value); 
				if (value.indexOf(".")!=-1) {
					checkvalue=checkvalue+1;
				}
			}
		}
		if ((parseFloat(min)==min && value.length<min) || (parseFloat(max)==max && value.length>max) || value!=checkvalue){
			if (alertbox!="") {
				alert(alertbox);
				entered.focus();
			}
			return false;
		} else {
			return true;
		}
	}
}

function emptyvalidation(entered, alertbox){
	with (entered){
		style.backgroundColor = "white";
		if (value==null || value==""){
			if (alertbox!="") {
				alert(alertbox);
				focus();
				style.backgroundColor = "#dcdcdc";
			} 
			return false;
		} else {
			return true;
		}
	}
}