ERROR=1
	INFO=2
	OK=3
	NOT_LOGGED=4 
	OBJECT_IN_SESSION_NOT_FOUND=5; 


	
	function showMessage(msg, type) {
		
		$("msgalert").removeClassName("msgalert");
		$("msgalert").removeClassName("msgok");
		$("msgalert").removeClassName("msgtip");

		$("msgalert").removeClassName("ghost");
		
		$("msgalert").innerHTML = msg;
		
		if (type == ERROR) {
			$("msgalert").addClassName("msgalert");
		
		} else if (type == INFO) {
			$("msgalert").addClassName("msgtip");

		} else if (type == OK) {
			$("msgalert").addClassName("msgok");

		}
	}
	
	
	function hideMessage() {
		$("msgalert").removeClassName("msgalert");
		$("msgalert").removeClassName("msgok");
		$("msgalert").removeClassName("msgtip");

		$("msgalert").innerHTML = "";
		$("msgalert").addClassName("msgalert");
		$("msgalert").addClassName("ghost");
	}


	
	function addLoadEvent(func) {	
		var oldonload = window.onload;
		if (typeof window.onload != 'function'){
	    	window.onload = func;
		} else {
			window.onload = function() {
				oldonload();
				func();
			}
		}
	}
	
	
	function removeAllChildren(id) {
		$(id).childElements().each(function(element) { element.remove() });
	}
	
	
	function removeAllOptions(id) {
		$(id).options.length = 0;
	}
	
	
	function addOptions(id, options, valueprop, textprop) {
		if (options == null) {
			return;
		}
		if (arguments.length == 2) {
			valueprop = 'id';
			textprop = 'name';
		}
		options.each(function(opt) {
			var entry = new Option(opt[textprop], opt[valueprop]);
			$(id).options[$(id).length] = entry;
		});
	}
	
	
	function isOptionChecked(elem, value) {
		elem=arrayrize(elem);
		for (var i=0; i < elem.length;i++) {
			if (elem[i].checked) {
				if (typeof value != "undefined") {
					if (elem[i].value == value) {
						return true;
					}
				} else { 
					return true;
				}
			}
		}
		return false;
	}
	
	
	function arrayrize(obj) {
		if(typeof obj.length == "undefined") {
			obj=[obj];
		}
		return obj;
	}
	
	
	
	function trimmed(sText) {
		
		var tmpStr=new String(sText);
		return tmpStr.strip();
	}

	
	function equalsIgnoreCase(arg1, arg2) {
		return ( (new String(trimmed(arg1))).toLowerCase() == (new String(trimmed(arg2))).toLowerCase());
	}
	
	
	function isEmpty(sText) {
		return trimmed(sText)=="";
	}
	
	
	function sortTable(tbody, index, type, evenclass, oddclass, orderType) {
		var rows = $A(tbody.rows);
	
		rows.sort(
				function(c,d) {
					if (type == "number") {
						var a = getCellNumber(c.cells[index]);
						var b = getCellNumber(d.cells[index]);
					} else {
						var a = getCellText(c.cells[index]);
						var b = getCellText(d.cells[index]);
					}
					if(orderType == "asc")
						return a < b ? -1 : a == b ? 0 : 1;
					return a > b ? -1 : a == b ? 0 : 1;
				});
	
		var i = 0;
		rows.each(function(r) {
			tbody.appendChild(r);
			r.className = i%2 == 0 ? evenclass : oddclass;
			i++;
		});
	}
	
	function getCellText(cell) {
		if (!cell) return "";
		return cell.textContent ? cell.textContent : cell.innerText;
	}
	
	function getCellNumber(cell) {
		var a = getCellText(cell);
		a = parseFloat(a.replace(/^.*?([-+]?[\d]*\.?[\d]+(?:[eE][-+]?[\d]+)?).*$/,"$1"));
		return isNaN(a) ? 0 : a;
	}