function isSpclChar(str){
	var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?~_";
	var spaceChar = " ";
	if(spaceChar.indexOf(str.charAt(0)) != -1) {
		return true;
	}
	for (var i = 0; i < str.length; i++) {
	    if (iChars.indexOf(str.charAt(i)) != -1) {
	        return true;
	    }
	}
}

function containsSpace(str){
	return str.match('[ ]');
	
}



// returns true if the string is empty
function isRequired(str){
	return (str == null) || (str.length == 0);
}
// returns true if the string is a valid email
function isEmail(str){
	if(isRequired(str)) return false;
	var re = /^[^\s()<>@,;:\/]+@\w[\w\.-]+\.[a-z]{2,}$/i
	return re.test(str);
}
// returns true if the string only contains characters 0-9 and is not null
function isNumeric(str){
	if(isRequired(str)) return false;
	var re = /[\D]/g
	if (re.test(str)) return false;
	return true;
}

//implementing a trim function for strings in javascript

String.prototype.trim = function () {
    return this.replace(/^\s*/, "").replace(/\s*$/, "");
};



/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
return true
}

/**
 * Function for getting the file extension
 * @param str - Pass the string value
 */
function getfileExtension(str) 
{ 
    var dot = str.lastIndexOf("."); 
    if( dot == -1 ) return ""; 
    var extension = str.substr(dot,str.length); 
    return extension; 
}

/**
 * Function for searching a value in an array
 * @param arrayToSearch - Pass the array to search
 * @param stringToSearch - Pass the string to be search
 * @return True or False
 */
function searchString (arrayToSearch, stringToSearch) 
{
    arrayToSearch.sort();
    for (var i = 0; i < arrayToSearch.length; i++) 
    {
        if (arrayToSearch[i] == stringToSearch)
            return true;
    }
    return false;
}

/* 
 * This function checks if special characters are present in the String parameter.
 */
function checkSpecial(str) {
	var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?~_"; 
	   for (var i = 0; i < str.length; i++) {
	  	if (iChars.indexOf(str.charAt(i)) != -1) {
	  	  alert ("Genre name cannot contain special characters. \nPlease change the name.");
	  	return false;
	  	}
	 }
	   return true;
}

//This function is used to strip slashes from a string.
function stripslashes(str) {
	str=str.replace(/\\'/g,'\'');
	str=str.replace(/\\"/g,'"');
	str=str.replace(/\\0/g,'\0');
	str=str.replace(/\\\\/g,'\\');
	return str;
}

function addslashes(str) {
	str=str.replace(/\\/g,'\\\\');
	str=str.replace(/\'/g,'\\\'');
	str=str.replace(/\"/g,'\\"');
	str=str.replace(/\0/g,'\\0');
	return str;
}


function watchvideonow() {
	var w = 425;
	var h = 405;
	var left = (screen.width/2)-(w/2);
	var top = (screen.height/2)-(h/2);
	var winpops=window.open("/watchvideonow.html","","width="+w+",height="+h+", top="+top+", left="+left);	
}