function isAlphaNumericSpace()
{
	if(window.event.keyCode==13)
	{
		window.event.keyCode=null;
	}
	else if(!(window.event.keyCode >= 48 && window.event.keyCode <= 57) && !(window.event.keyCode >= 65 && window.event.keyCode <= 90) && !(window.event.keyCode >= 97 && window.event.keyCode <= 122) && !(window.event.keyCode == 32))
	{
		window.event.keyCode=null;
	}
}

function isAlphabet()
{
	if(window.event.keyCode==13)
	{
		window.event.keyCode=null;
	}
	else if(!(window.event.keyCode >= 65 && window.event.keyCode <= 90) && !(window.event.keyCode >= 97 && window.event.keyCode <= 122))
	{
		window.event.keyCode=null;
	}
}

function isPhoneFaxZip()
{
	if(window.event.keyCode==13)
	{
		window.event.keyCode=null;
	}
	else if(!(window.event.keyCode >= 48 && window.event.keyCode <= 57) && !(window.event.keyCode == 40) && !(window.event.keyCode == 45) && !(window.event.keyCode == 41) && !(window.event.keyCode == 32))
	{
		window.event.keyCode=null;
	}
}           

function isNumeric()
{
	if(window.event.keyCode==13)
	{
		window.event.keyCode=null;
	}
	else if(!(window.event.keyCode >= 48 && window.event.keyCode <= 57))
	{
		window.event.keyCode=null;
	}
}

function isName()
{
	if(window.event.keyCode==13)
	{
		window.event.keyCode=null;
	}
	else if(!(window.event.keyCode >= 65 && window.event.keyCode <= 90) && !(window.event.keyCode >= 97 && window.event.keyCode <= 122) && !(window.event.keyCode == 45) && !(window.event.keyCode == 46) && !(window.event.keyCode == 32) && !(window.event.keyCode >= 48 && window.event.keyCode <= 57))
	{
		window.event.keyCode=null;
	}
}

function isLogin()
{
	if(window.event.keyCode==13)
	{
		window.event.keyCode=null;
	}
	else if(!(window.event.keyCode >= 65 && window.event.keyCode <= 90) && !(window.event.keyCode >= 97 && window.event.keyCode <= 122) && (!(window.event.keyCode >= 48 && window.event.keyCode <= 57)))
	{
		window.event.keyCode=null;
	}
}

function strTrim(sString)
{
	while (sString.substring(0,1) == ' ')
	{
		sString = sString.substring(1, sString.length);
	}
	
	while (sString.substring(sString.length-1, sString.length) == ' ')
	{
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}


function isAlphaNumeric()
{
	if(window.event.keyCode==13)
	{
		window.event.keyCode=null;
	}
	else if(!(window.event.keyCode >= 48 && window.event.keyCode <= 57) && !(window.event.keyCode >= 65 && window.event.keyCode <= 90) && !(window.event.keyCode >= 97 && window.event.keyCode <= 122))
	{
		window.event.keyCode=null;
	}
}


function isEmail(str) 
{
	
	var at="@";
	var dot=".";
	var lat=str.indexOf(at);
	
	var lstr=str.length;
	var ldot=str.indexOf(dot);
	
	
	if (str.indexOf(at)==-1)
	{
		return false;
	}

	
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr)
	{
		return false;
	}
	
	
	
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr)
	{
		return false;
	}

	if (str.indexOf(at,(lat+1))!=-1)
	{
		return false;
	}

	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot)
	{
		return false;
	}

	if (str.indexOf(dot,(lat+2))==-1)
	{
		return false;
	}

	if (str.indexOf(" ")!=-1)
	{
		return false;
	}
	return true;				
}