function searchStock(search){
	$('#stockSearchMessage').hide();
	var stock_i = true;
	var found = false;
	$('#stockTable tr.group_content').removeClass('highlight').hide();
	$('#stockTable tr.group_content td:first-child:contains('+search.toUpperCase()+')').each(function(){
		// open togglen op de class van de tr die overeenkomt met de id van de head
		var aClasses = $(this).parent().attr('class').split(' ');
		$('#stockTable tr.group_content').filter(function(index){
				return $(this).hasClass(aClasses[1]);
			}).show().each(function(){
				// scroll naar de eerste occurance
				if(stock_i){
					stock_i=false;
					var p = $(this).position();
					$(window).scrollTop(p.top-5);
				}
			});
		found=true;
	}).parent().addClass('highlight');
	if(!found){
		$('#stockSearchMessage').show();
	}

}

function heightAdjust(){
	 /* height adjustments */
	 // kijken wie het grootst is
	 $max = 0;
	 if($('#left').height() > $max){
		 $max = $('#left').height();
	 }
	 if($('#right').height() > $max){
		 $max = $('#right').height();
	 }
	 // eerst center vergroten als viewport groter is
	 if(($('#center').height() < $(window).height()-$('#header').height()-$('#footer').height()) && ($('#center').height() < $('.content_bottom').height()) && ($('center').height() < $max)){
		$('#center').height($(window).height()-$('#header').height()-$('#footer').height()-40);
	 }

	 if($('#center').height() > $max){
		 $max = $('#center').height();
	 }

	 if($max > 0){
		$('#left').height($max);
		$('#right').height($max); 
	 }
}