<!--
    	function InputCheck(myForm,field,what){
    		var mystring = document.forms[myForm].elements[field].value;
    		var myarray = mystring.split("");
    		if( what == "numbers" ){ var myRegExp =new RegExp("[0-9]", "i"); }
    		else if( what == "email" ){ var myRegExp =new RegExp("[A-Z0-9@_\.-]", "i"); }
    		else if( what == "letters" ){ var myRegExp =new RegExp("[A-Z]", "i"); }
    		else if( what == "numbers&space" ){ var myRegExp =new RegExp("[0-9 ]", "i"); }
    		else if( what == "letters&space" ){ var myRegExp =new RegExp("[A-Z ]", "i"); }
    		else if( what == "letters&numbers" ){ var myRegExp =new RegExp("[A-Z0-9]", "i"); }
    		else if( what == "letters&numbers&space" ){ var myRegExp =new RegExp("[A-Z0-9 ]", "i"); }
      	var mynewstring='';
    		for(i=0; i < myarray.length; i++){
    			if(myarray[i].match(myRegExp)){
    				mynewstring += myarray[i];
    			}
    		}
    		if(mynewstring){
 				document.forms[myForm].elements[field].value = mynewstring;
    		}
    		else{
    			document.forms[myForm].elements[field].value = '';
    		}
    	}
// -->