function isNumeric(elem)
		{
			var numericExpression = "[0-9-+]{1,15}$";
			if(elem.value.match(numericExpression)){
				return true;
			}else{
				return false;
			}
		}

		
		
		function isAlphabet(elem){
			var alphaExp ="^[a-zA-Z. ']{1,50}$";
			if(elem.value.match(alphaExp))
			{
				return true;
			}
			else
			{
			return false;
			}
		}
		
		function isAlphaNumeric(val)
			{
				//var alphaNumExp = /^[a-zA-Z0-9',_&/:@!?.#%*-=/(/) ]+$/;
				var alphaNumExp = "^[a-zA-Z\\0-9,_&/:@!?.#%'*-=/(/) ]+$"; 
				if (val.match(alphaNumExp))
				{
					return true;
				}
				else
				{
					return false;
				} 
			}
			

function LTrim(value) {
	
	var re = /\s*((\S+\s*)*)/;
	return value.replace(re, "$1");
	
}
function RTrim(value) {
	
	var re = /((\s*\S+)*)\s*/;
	return value.replace(re, "$1");
	
}
function trim(value) {
	
	return LTrim(RTrim(value));
	
}