function doURL(obj)
{
	var sel;
	textarea = document.getElementById(obj);
	var url = prompt('Podaj adres:','http://');
	var scrollTop = textarea.scrollTop;
	var scrollLeft = textarea.scrollLeft;

	if (url != '' && url != null) {
	
		if (document.selection) {
			textarea.focus();
			var sel = document.selection.createRange();
		
			if(sel.text==""){
				sel.text = '<a href="' + url + '">' + url + '<\/a>';
			} else {
				sel.text = '<a href="' + url + '">' + sel.text + '<\/a>';
			}
		} else {
			var len = textarea.value.length;
			var start = textarea.selectionStart;
			var end = textarea.selectionEnd;
		
			var sel = textarea.value.substring(start, end);
		
			if(sel==""){
				sel=url; 
			} else {
			        var sel = textarea.value.substring(start, end);
			}	
			
			var rep = '<a href="' + url + '">' + sel + '<\/a>';
		        textarea.value =  textarea.value.substring(0,start) + rep + textarea.value.substring(end,len);
			textarea.scrollTop = scrollTop;
			textarea.scrollLeft = scrollLeft;
		}
		textarea.focus();
	}
}

function doAddTags(tag1,tag2,obj)
{
	textarea = document.getElementById(obj);
	// Code for IE
	if (document.selection) {
		textarea.focus();
		var sel = document.selection.createRange();
		sel.text = tag1 + sel.text + tag2;
	} else {  // Code for Mozilla Firefox
		var len = textarea.value.length;
		var start = textarea.selectionStart;
		var end = textarea.selectionEnd;
		
		var scrollTop = textarea.scrollTop;
		var scrollLeft = textarea.scrollLeft;
		
	        var sel = textarea.value.substring(start, end);
		var rep = tag1 + sel + tag2;
	        textarea.value =  textarea.value.substring(0,start) + rep + textarea.value.substring(end,len);	
		textarea.scrollTop = scrollTop;
		textarea.scrollLeft = scrollLeft;
	}
	textarea.focus();
}