function DeleteSpaces(str)  // Takes out the spaces at the begining/end of the string 
{
	var nStrLen = str.length;
	var strBgnCharCtr = 0;
	var strEndCharCtr = nStrLen;
	var FinalStr = "";
	var strFinalLength = 0;
	
	for(var i=0; i<nStrLen; i++)
	{
		if (str.charAt(i)==" ")
			strBgnCharCtr=strBgnCharCtr+1;
		else
			break;
	}
	for(var j=nStrLen-1; j>=0; j--)
	{
		if (str.charAt(j)==" ")
			strEndCharCtr=strEndCharCtr-1;
		else
			break;
	}

	for(var k=strBgnCharCtr; k<strEndCharCtr; k++)
	{
		FinalStr = FinalStr + str.charAt(k);  
	}
	return FinalStr;
}

function CheckEmailFormat(strEmail) { //Check format of email address string
	var regEmail = /^([\w-_.])*\w+@([\da-zA-Z-]+\.)+[\da-zA-Z]{2,4}$/
	if (strEmail.length == 0) {
		return true;
	}
	if (strEmail.match(regEmail) == null) {
		return false;
	}
	return true;
}