var bMod = {
	init : function() {
		bMod.setSelectAllBtns();
	},
	setSelectAllBtns : function() {
		var btn1 = document.getElementById('allselecta');
		btn1.onclick = function() {
			bMod.selectAll('segmenten');
			return false;
		}
		var btn2 = document.getElementById('allselectb');
		btn2.onclick = function() {
			bMod.selectAll('productgroepen');
			return false;
		}
	},
	selectAll : function(fld) {
		var slct = document.getElementById(fld);
		var options = slct.getElementsByTagName('OPTION');
		for(i=0;i<options.length;i++) {
			var obj = options[i];
			obj.selected = "selected";
		}
	}
}