/* 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;
	}
}


//Function to check for Valid EMail
function IsValidEmail(ObjName) 
{
	var inputStr;
	inputStr=document.getElementById(ObjName).value;
	/*if (inputStr.indexOf('@') < 1 || inputStr.indexOf('.') < 3 || inputStr.indexOf(',') != -1 || inputStr.indexOf(' ') != -1 || inputStr.indexOf('"') != -1 || inputStr.indexOf('/') != -1 || inputStr.indexOf('|') != -1 || inputStr.indexOf('?') != -1 || inputStr.indexOf('<') != -1 || inputStr.indexOf('>') != -1 || inputStr.indexOf('=') != -1 || inputStr.indexOf('+') != -1 || inputStr.indexOf('(') != -1 || inputStr.indexOf(')') != -1 || inputStr.indexOf('*') != -1 || inputStr.indexOf('&') != -1 || inputStr.indexOf('^') != -1 || inputStr.indexOf('%') != -1 || inputStr.indexOf('$') != -1 || inputStr.indexOf('#') != -1 || inputStr.indexOf('!') != -1 || inputStr.indexOf('`') != -1 || inputStr.indexOf('~') != -1 || inputStr.indexOf(';') != -1 || inputStr.indexOf(':') != -1 || inputStr.indexOf('aapkaindore') != -1 || inputStr.indexOf('@.') != -1) 
		return false;
	else
		return true;
	*/	
	var supported = 0; 
	if (window.RegExp) 
	{
		var tempStr = "a";
		var tempReg = new RegExp(tempStr);
		if (tempReg.test(tempStr)) supported = 1;
	}
	if (!supported) 
		return (inputStr.indexOf(".") > 2) && (inputStr.indexOf("@") > 0);
		var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
		var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
		return (!r1.test(inputStr) && r2.test(inputStr));
}

//Function to check for Empty Field
function IsEmpty(ObjName) 
{
	var inputStr;
	inputStr=trim(document.getElementById(ObjName).value);
	if ((inputStr == "") || (inputStr == null)) 
		return true;
	else	
		return false;
}


    //Function to check for Numeric Value

    function IsNumeric(objName)
    // check for valid numeric strings
    {
	     /******************************************************************************
		    DESCRIPTION: Validates that a string contains only valid numbers.

		    PARAMETERS:
		       strValue - String to be tested for validity

		    RETURNS:
		       True if valid, otherwise false.
	     ******************************************************************************/
	    var strString = document.getElementById(objName).value;
	    var objRegExp  =  /(^-?\d\d*\.\d*$)|(^-?\d\d*$)|(^-?\.\d\d*$)/;
	    return objRegExp.test(strString);	
    } 



// 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 getElement(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 M=document.selection.createRange();
		try{
			var Lp = M.duplicate();
			Lp.moveToElementText(obj);
		}catch(e){
			var Lp=obj.createTextRange();
		}
		Lp.setEndPoint("EndToEnd",M);
		var rb=Lp.text.length;
		if(rb>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 M=document.selection.createRange();
		try{
			var Lp = M.duplicate();
			Lp.moveToElementText(obj);
		}catch(e){
			var Lp=obj.createTextRange();
		}
		Lp.setEndPoint("EndToStart",M);
		var rb=Lp.text.length;
		if(rb>obj.value.length){
			return -1;
		}
		return rb;
	}
}
// sets the caret position to l in the object
function setCaret(obj,l){
	obj.focus();
	if (obj.setSelectionRange){
		obj.setSelectionRange(l,l);
	}else if(obj.createTextRange){
		m = obj.createTextRange();		
		m.moveStart('character',l);
		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 curTop(obj){
	toreturn = 0;
	while(obj){
		toreturn += obj.offsetTop;
		obj = obj.offsetParent;
	}
	return toreturn;
}
function curLeft(obj){
	toreturn = 0;
	while(obj){
		toreturn += obj.offsetLeft;
		obj = obj.offsetParent;
	}
	return toreturn;
}
/* ------ End of Offset function ------- */

/* Types Function */

// is a given input a number?
function isNumber(a) {
    return typeof a == 'number' && isFinite(a);
}

/* Object Functions */

function replaceHTML(obj,text){
	while(el = obj.childNodes[0]){
		obj.removeChild(el);
	};
	obj.appendChild(document.createTextNode(text));
}

// function to trim the string
function trim(inputStr) {
	if (inputStr == null) { 
		return inputStr;
	}
	var strLTrimmedString="";
	for (var i = 0; i < inputStr.length; i++) {
		if (inputStr.substring(i, i + 1) != " ") {
			strLTrimmedString = inputStr.substring(i, inputStr.length);
			break;
		}
	}
	var strTrimmedString="";
	for (var i = strLTrimmedString.length; i > 0; i--) {
		if (strLTrimmedString.substring(i, i - 1) != " ") {
			strTrimmedString = strLTrimmedString.substring(0, i);
			break;
		}
	}
	return strTrimmedString;
}