function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
var preloadFlag = false;

function preloadImages() {
	if (document.images) {
		// always used 
		pre_image1 = newImage('/assets/images/skin/icons/print_hover.gif');
		pre_image2 = newImage('/assets/images/skin/icons/next_hover.gif');
		pre_image3 = newImage('/assets/images/skin/icons/back_hover.gif');
		pre_image4 = newImage('/assets/images/skin/icons/to_top_hover.gif');
		// -----------
		preloadFlag = true;
	}
}

preloadImages();

function changeImages(array) {
	if (preloadFlag == true) {
		var d = document; var img;
		for (var i=0; i<array.length; i+=2) {
			img = null; var n = array[i];
			if (d.images) {img = d.images[n];}
			if (!img && d.getElementById) {img = d.getElementById(n);}
			if (img) {img.src = array[i+1];}
		}
	}
}

function changeImage() {
	changeImages(changeImage.arguments);
}

//change backgroundcolor of Id
function changeBGColor(id, color) {
	var obj=findObj(id); 
	if (obj) {
		if (obj.style) obj=obj.style; 
		obj.backgroundColor = color;	
	}
}

function encode_adr(a,b,as_link) {
	if (a!='' && b!='') {
		var act = '&#109;a' + 'i&#108;' + '&#116;o';
		var c = 'hr' + 'ef' + '=';
		var adr = a + '&#64;' + b;
		if (as_link==1){
			document.write( '<a '+c+'\''+act+':'+adr+'\'>'+adr+'</a>');
		}
		else {
			document.write(adr);
		}
	}
	else {
		document.write(a);
	}
}