/* Event Functions */

// Add an event to the obj given
// event_name refers to the event trigger, without the "on", like click or mouseover
// func_name refers to the function callback when event is triggered
function addEvent(obj,event_name,func_name){
	if (obj.attachEvent)
	{
		obj.attachEvent("on"+event_name, func_name);
	}
	else if(obj.addEventListener)
	{
		obj.addEventListener(event_name,func_name,true);
	}
	else
	{
		obj["on"+event_name] = func_name;
	}
}

// Removes an event from the object
function removeEvent(obj,event_name,func_name){
	if (obj.detachEvent)
	{
		obj.detachEvent("on"+event_name,func_name);
	}
	else if(obj.removeEventListener)
	{
		obj.removeEventListener(event_name,func_name,true);
	}
	else
	{
		obj["on"+event_name] = null;
	}
}

// Stop an event from bubbling up the event DOM
function stopEvent(evt)
{
	evt || window.event;
	if (evt.stopPropagation)
	{
		evt.stopPropagation();
		evt.preventDefault();
	}
	else if(typeof evt.cancelBubble != "undefined")
	{
		evt.cancelBubble = true;
		evt.returnValue = false;
	}
	return false;
}

// Get the obj that starts the event
function getElementByEvent(evt)
{
	if (window.event)
	{
		return window.event.srcElement;
	}
	else
	{
		return evt.currentTarget;
	}
}
// Get the obj that triggers off the event
function getTargetElement(evt)
{
	if (window.event)
	{
		return window.event.srcElement;
	}
	else
	{
		return evt.target;
	}
}
// For IE only, stops the obj from being selected
function stopSelect(obj)
{
	if (typeof obj.onselectstart != 'undefined')
	{
		addEvent(obj,"selectstart",function(){ return false;});
	}
}

/*    Caret Functions     */

// Get the end position of the caret in the object. Note that the obj needs to be in focus first
function getCaretEnd(obj)
{
	if(typeof obj.selectionEnd != "undefined")
	{
		return obj.selectionEnd;
	}
	else if(document.selection&&document.selection.createRange)
	{
		var range=document.selection.createRange();
		try
		{
			var rangeCopy = range.duplicate();
			rangeCopy.moveToElementText(obj);
		}
		catch(e)
		{
			var rangeCopy=obj.createTextRange();
		}
		rangeCopy.setEndPoint("EndToEnd",range);
		var rangeCopyLength=rangeCopy.text.length;
		if(rangeCopyLength>obj.value.length)
		{
			return -1;
		}
		return rb;
	}
}
// Get the start position of the caret in the object
function getCaretStart(obj)
{
	if(typeof obj.selectionStart != "undefined")
	{
		return obj.selectionStart;
	}
	else if(document.selection&&document.selection.createRange)
	{
		var range=document.selection.createRange();
		try
		{
			var rangeCopy = range.duplicate();
			rangeCopy.moveToElementText(obj);
		}
		catch(e)
		{
			var rangeCopy=obj.createTextRange();
		}
		rangeCopy.setEndPoint("EndToStart",range);
		var rangeCopyLength=rangeCopy.text.length;
		if(rangeCopyLength>obj.value.length)
		{
			return -1;
		}
		return rangeCopyLength;
	}
}
// sets the caret position to l in the object
function setCaret(obj,position)
{
	obj.focus();
	if (obj.setSelectionRange)
	{
		obj.setSelectionRange(position,position);
	}
	else if(obj.createTextRange)
	{
		m = obj.createTextRange();		
		m.moveStart('character',position);
		m.collapse();
		m.select();
	}
}
// sets the caret selection from s to e in the object
function setSelection(obj,s,e)
{
	obj.focus();
	if (obj.setSelectionRange)
	{
		obj.setSelectionRange(s,e);
	}
	else if(obj.createTextRange)
	{
		m = obj.createTextRange();		
		m.moveStart('character',s);
		m.moveEnd('character',e);
		m.select();
	}
}

/*    Escape function   */
String.prototype.addslashes = function() {
	return this.replace(/(["\\\.\|\[\]\^\*\+\?\$\(\)])/g, '\\$1');
}
String.prototype.trim = function () {
    return this.replace(/^\s*(\S*(\s+\S+)*)\s*$/, "$1");
};
/* --- Escape --- */

/* Offset position from top of the screen */
function getOffsetTop(obj)
{
	retval = 0;
	while(obj)
	{
		retval += obj.offsetTop;
		obj = obj.offsetParent;
	}
	return retval;
}
function getOffsetLeft(obj)
{
	retval = 0;
	while(obj)
	{
		retval += obj.offsetLeft;
		obj = obj.offsetParent;
	}
	return retval;
}
/* ------ End of Offset function ------- */

// see php documentation
function sprintf()
{
	if (!arguments || arguments.length < 1 || !RegExp)
	{
		return;
	}
	var str = arguments[0];
	var re = /([^%]*)%('.|0|\x20)?(-)?(\d+)?(\.\d+)?(%|b|c|d|u|f|o|s|x|X)(.*)/;
	var a = b = [], numSubstitutions = 0, numMatches = 0;
	while (a = re.exec(str))
	{
		var leftpart = a[1], pPad = a[2], pJustify = a[3], pMinLength = a[4];
		var pPrecision = a[5], pType = a[6], rightPart = a[7];

		numMatches++;
		if (pType == '%')
		{
			subst = '%';
		}
		else
		{
			numSubstitutions++;
			if (numSubstitutions >= arguments.length)
			{
				alert('Error! Not enough function arguments (' + (arguments.length - 1) + ', excluding the string)\nfor the number of substitution parameters in string (' + numSubstitutions + ' so far).');
			}
			var param = arguments[numSubstitutions];
			var pad = '';
			       if (pPad && pPad.substr(0,1) == "'") pad = leftpart.substr(1,1);
			  else if (pPad) pad = pPad;
			var justifyRight = true;
			       if (pJustify && pJustify === "-") justifyRight = false;
			var minLength = -1;
			       if (pMinLength) minLength = parseInt(pMinLength);
			var precision = -1;
			       if (pPrecision && pType == 'f') precision = parseInt(pPrecision.substring(1));
			var subst = param;
			       if (pType == 'b') subst = parseInt(param).toString(2);
			  else if (pType == 'c') subst = String.fromCharCode(parseInt(param));
			  else if (pType == 'd') subst = parseInt(param) ? parseInt(param) : 0;
			  else if (pType == 'u') subst = Math.abs(param);
			  else if (pType == 'f') subst = (precision > -1) ? Math.round(parseFloat(param) * Math.pow(10, precision)) / Math.pow(10, precision): parseFloat(param);
			  else if (pType == 'o') subst = parseInt(param).toString(8);
			  else if (pType == 's') subst = param;
			  else if (pType == 'x') subst = ('' + parseInt(param).toString(16)).toLowerCase();
			  else if (pType == 'X') subst = ('' + parseInt(param).toString(16)).toUpperCase();
		}
		str = leftpart + subst + rightPart;
	}
	return str;
}

function execFunction(params) {
	call = params[0]+"(";
	for(i = 1; i < params.length-1; i++) 
	{
		call += "params["+i+"],";
	}
	call += "params["+(params.length-1)+"]);";
	//frm.EBody.value += call + '\n';
	return eval(call);
}