function init() {
	var el, i;
	// load alpha shadows
	switch_png_id(getel('cash_register'));
}

function getel(id) {
	var id;
	return document.getElementById(id);
}

function switch_png_id(el) {
	var el;
	el.id = broken_png() ? el.id+'_ie' : el.id+'_alpha';
}

function broken_png() {
	var arVersion = navigator.appVersion.split("MSIE");
	var version = parseFloat(arVersion[1]);
	return ((version >= 5.5) && (version < 7) && (document.body.filters)) ? true : false;
}

function fix_png(myImage) {
	var arVersion = navigator.appVersion.split("MSIE");
	var version = parseFloat(arVersion[1]);
    if ((version >= 5.5) && (version < 7) && (document.body.filters)) 
    {
       var imgID = (myImage.id) ? "id='" + myImage.id + "' " : ""
	   var imgClass = (myImage.className) ? "class='" + myImage.className + "' " : ""
	   var imgTitle = (myImage.title) ? 
		             "title='" + myImage.title  + "' " : "title='" + myImage.alt + "' "
	   var imgStyle = "display:inline-block;" + myImage.style.cssText
	   var strNewHTML = "<span " + imgID + imgClass + imgTitle
                  + " style=\"" + "width:" + myImage.width 
                  + "px; height:" + myImage.height 
                  + "px;" + imgStyle + ";"
                  + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
                  + "(src=\'" + myImage.src + "\', sizingMethod='scale');\"></span>"
	   myImage.outerHTML = strNewHTML	  
    }
}

function advice_swap( id , back ) {
	var id, back;
	var el1 = document.getElementById('advice_'+id);
	var el2 = document.getElementById('advice_swap_'+id);
	if( back ) {
		el1.style.display = 'block';
		el2.style.display = 'none';
	} else {
		el1.style.display = 'none';
		el2.style.display = 'block';
	}
}