function onlyDigits() {
	 //number keycodes are 0 = 48 and 9 = 57 and ,(comma) = 44
	 if ((event.keyCode < 48 || event.keyCode > 57) && event.keyCode != 44) {
		event.keyCode = 0;
		return false;
	 }else{
		return true;
	 }			    
}

function onlyDigits_decimal() {
	 //number keycodes are 0 = 48 and 9 = 57 and ,(comma) = 44 and .period = 46
	
	 if ((event.keyCode < 48 || event.keyCode > 57) && event.keyCode != 44 && event.keyCode != 46) {
		event.keyCode = 0;
		return false;
	 }else{
		return true;
	 }		
}

function checkChars(){
		// number keycodes are 0 - 9 (48 - 57), a - z (64 - 90), A - Z (97 - 122), @ (39), _ (95), space (32)
		var intKeyCode = event.keyCode;
		if((intKeyCode < 64 || intKeyCode > 90) && (intKeyCode < 97 || intKeyCode > 122) && (intKeyCode < 48 || intKeyCode > 57) && (intKeyCode != 39) && (intKeyCode != 95) && (intKeyCode != 32) && (intKeyCode != 46)){
			event.keyCode = 0;
			return false;
		} else {
			return true;
		}
	}
function checkLength(element){

	if(element.value.length > 99000) {
		alert("You have exceeded the maximum text length of 99,000 characters.");
		element.value = "";
	}

}