function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		products_over = newImage("images/products-over.gif");
		resellers_over = newImage("images/resellers-over.gif");
		links_over = newImage("images/links-over.gif");
		contact_over = newImage("images/contact-over.gif");
		home_over = newImage("images/home-over.gif");
		preloadFlag = true;
	}
}

function trim(str) {
	var whitespace = new String(" \t\n\r");
	var s = new String(" " + str + " ");
	if (whitespace.indexOf(s.charAt(0)) != -1) {
		var j=0, i = s.length;
            while (j < i && whitespace.indexOf(s.charAt(j)) != -1) {
			j++;
		}
            s = s.substring(j, i);
	}

	if (whitespace.indexOf(s.charAt(s.length-1)) != -1) {
		var i = s.length - 1;       
            while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1) {
			i--;
		}
            s = s.substring(0, i+1);
	}
	return s;
}

function win(URL) { 
	swidth = (screen.width-700)/2;
	sheight = (screen.availHeight-550)/2
	var win = window.open(URL,'win','width=700,height=550,top=' + sheight + ',left=' + swidth + ',resizable=yes,scrollbars=yes,location=yes');
	win.focus();
}

function win_pic(URL, w, h) { 
	swidth = (screen.width-w)/2;
	sheight = (screen.availHeight-h)/2
	var win_pic = window.open(URL,'win_pic','width='+w+',height='+h+',top=' + sheight + ',left=' + swidth + ',resizable=yes,scrollbars=yes');
	win_pic.focus();
}