function checkField(formObj){
	searchboxObj = formObj.searchbox
	if(specialCharacterCheck(searchboxObj) == 2){
		alert("Data are invalid.[ /*@=\n\r<> ] are not allowed character")			
		return false
	}
}
function specialCharacterCheck(fieldObj){
	var checkOK = "/*@=\n\r<>";
	var checkStr = fieldObj.value;
	var allValid = 1;
	for (i = 0;  i < checkStr.length;  i++){
		ch = checkStr.charAt(i);
		for (j = 0;  j < checkOK.length;  j++){
			if (ch == checkOK.charAt(j)){
				fieldObj.select()
				allValid = 2
				return allValid;																		
				break;
			}				
		}
	}
}