$(document).ready(function(){
	jQuery(function(){jQuery(document).pngFix();});
}); 

function stelvraag(){
	if(document.orakelForm.question.value==''){ 
		alert('Je dient een vraag in te vullen.');
	}else{
		document.orakelForm.submit();
	}
}

function checkform(form, cat) {
	var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i;
	var error=0;
	for (var x=0; form.elements[x]; x++ ) {
		if(form.elements[x].title == "verplicht") {
			if (form.elements[x].type == 'select-one'){
				if (form.elements[x].options[form.elements[x].selectedIndex].value == "") error++;
			}else if (form.elements[x].type == 'checkbox'){
				if (!form.elements[x].checked) error++;
			}else{
				if(form.elements[x].name=="email"){
					if (emailfilter.test(form.elements[x].value)==false) error++
				}else{
					if (form.elements[x].value == "") error++;
				}
			}
			if(error>0){
				alert( "U heeft het verplichte veld '" + form.elements[x].id + "' niet ingevuld." );
	        		form.elements[x].focus();
			        return false ;
			}
		}
	} 
	
	if (cat>0)
	{
		var total=0;
		cursussen = document.getElementsByName('cursus[]');
		
		for(var i=0; i < cursussen.length; i++)
		{
			if(cursussen[i].checked){
				total++;
			}
		}
		
		if(total==0)
		{
			if (cat==1){
				alert( "U dient minimaal 1 artikel op te gegeven." );
			}
			else {
				alert( "U dient minimaal 1 cursus op te geven." );
			}
			return false;
		}
	}
}

function disableEnterKey(e)
{
     var key;

     if(window.event)
          key = window.event.keyCode;     //IE
     else
          key = e.which;     //firefox

     if(key == 13)
          return false;
     else
          return true;
}



function checknumber(veld, inp, num){
	patroon = /(^-?\d\d*$)/;
	if(parseInt(inp)<parseInt(num)){
		document.getElementById(veld).value=num;
		document.getElementById(veld).focus(); 
		document.getElementById(veld).select(); 
		alert('Minimum number of items is '+num+'.'); 
		return false;
	}
}