JavaScript - Time Validation function

Here is a handy function for validating time.

	function fn_ValidateTime(){
		var strCDA_X_Field 	= document.getElementById('strCDA_X_Field');
		var strValue		= strCDA_X_Field.value;
		var aryTemp			= [];
		var blValid			= true;
		
		//if the time is 8 digits 00:00:00
		if(strValue.length == 8){
			//if there is a seim-colon at 2 and 5
			if((strValue.indexOf(':') == 2) && (strValue.indexOf(':') == 5)){
				aryTemp			= strValue.split(':');
				//Check each element to see if they are correct, hours can be up 99 but the rest must be less than or equal 59
				if(aryTemp[0] <= 99){
					if(aryTemp[1] <= 59){
						if(aryTemp[2] <= 59){
							blValid = true;
						}
						else{
							blValid	= false;
						}
					}
					else{
						blValid	= false;
					}
				}
				else{
					blValid		= false;
				}
			}
			else{
				blValid			= false;
			}
		}
		else{
			blValid				= false;
		}
		
		return blValid;
	}