//swap image
function swap_img(id, new_img) {
	$('#'+id).attr({'src' : new_img});
}

function add_btn_over(id) {
	$('#'+id).css('borderColor', '#336633');
}

function add_btn_out(id) {
	$('#'+id).css('borderColor', '#DDDDDD');
}

function check_if_record_exists(table, fields, values, feedback_element) {
	//send ajax call
	
	var data_string = "table="+table;
	
	for(var f = 0; f < fields.length; f++) {
		var field = fields[f];
		var value = $('#'+values[f]).val();
		data_string += "&field_" + f + "=" + field + "&value_" + f + "=" + value;
	}
	
	$.ajax({
		url: "check_if_record_exists.php",
		data: data_string,
		success: function(data) {
			$('#'+feedback_element).html(data);
			$('#'+feedback_element).css({'visibility' : 'visible'});
		}
	});
}

function toggle_link(id, state) {
	if(state == 'on') {
		$('#'+id).parent().css({'list-style-image' : 'url(images/dash_<?php echo $colour; ?>.png)'});
		$('#'+id).next().css({'height' : 'auto'});
	} else {
		$('#'+id).parent().css({'list-style-image' : 'url(images/plus_<?php echo $colour; ?>.png)'});
		$('#'+id).next().css({'height' : '0px'});
	}
}

function MM_preloadImages() { //v3.0
  var d=document;
	if(d.images) {
		if(!d.MM_p) d.MM_p = new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments;
		for(i=0; i<a.length; i++) {
    	if(a[i].indexOf("#")!=0) {
				d.MM_p[j]= new Image;
				d.MM_p[j++].src=a[i];
			}
		}
	}
}