/* Schovává popř. zobrazuje podkategorie */
function cat_sh(item){
  el=document.getElementById('cat_'+item).style;
  if  (el.display == 'block') {
    el.display='none';
    document.images['img_'+item].src='templates/_backend/images/plus.gif';
  }
  else {
    el.display='block';
    document.images['img_'+item].src='templates/_backend/images/minus.gif';
  } 
}

/* Schovává popř. zobrazuje prvek */
function show_hide(item){
  el=document.getElementById(item).style;
  if  (el.display == 'block') {
    el.display='none';
  }
  else {
    el.display='block';
  } 
}

/*
 * Image preview script
 * written by Alen Grakalic (http://cssglobe.com) 
 * for more info visit http://cssglobe.com/post/1695/easiest-tooltip-and-image-preview-using-jquery
 */
this.imagePreview = function(){
	/* CONFIG */

		ixOffset = 150;
		iyOffset = 30;

		// these 2 variable determine popup's distance from the cursor
		// you might want to adjust to get the right result

	/* END CONFIG */
	$("a.preview").hover(function(e){
		this.t = this.title;
		this.title = "";
		var c = (this.t != "") ? "<br/>" + this.t : "";
		$("body").append("<p id='preview'><img src='"+ this.href +"' alt='Image preview' />"+ c +"</p>");
		$("#preview")
			.css("top",(e.pageY - ixOffset) + "px")
			.css("left",(e.pageX + iyOffset) + "px")
			.fadeIn("fast");
    },
	function(){
		this.title = this.t;
		$("#preview").remove();
    });
	$("a.preview").mousemove(function(e){
		$("#preview")
			.css("top",(e.pageY - ixOffset) + "px")
			.css("left",(e.pageX + iyOffset) + "px");
	});
};
$(document).ready(function(){
	imagePreview();
});