function search_validate() {
if(document.frmsearch.to.value==""){
		alert("Please enter age to continue.");
		document.frmsearch.to.focus();
		return false;
}
	 
	 
if(document.frmsearch.to.value!=""){
	var sText=document.frmsearch.to.value;
	var ValidChars = "0123456789";
	var IsNumber=true;
	var Char;	
		for (j = 0; j < sText.length && IsNumber == true; j++) 
		{ 
			Char = sText.charAt(j); 
			if (ValidChars.indexOf(Char) == -1) 
			{
				IsNumber = false;
			}
		}
	 if(IsNumber==false) {
		alert("Please enter valid age.");
		return false;
	 }
}
if(document.frmsearch.from.value==""){
		alert("Please enter age to  continue.");
		document.frmsearch.to.focus();
		return false;
}

if(document.frmsearch.from.value!=""){
	var sText=document.frmsearch.from.value;
	var ValidChars = "0123456789";
	var IsNumber=true;
	var Char;	
		for (j = 0; j < sText.length && IsNumber == true; j++) 
		{ 
			Char = sText.charAt(j); 
			if (ValidChars.indexOf(Char) == -1) 
			{
				IsNumber = false;
			}
		}
	 if(IsNumber==false) {
		alert("Please enter valid age.");
		return false;
	 }
}
}