<!--

function trim(varString){

	var strTemp = varString.toString();
		
	if(strTemp.indexOf(" ") >= 0){
	
		// Left Trim
		for (i=0; i < strTemp.length; i++) {
			if(strTemp.charAt(i) == " "){
				strTemp = strTemp.substring(i + 1);
			}
			else{
				break
			}
		}
		
		// Right Trim
		for (i=strTemp.length - 1;  i >= 0; i--) {
			if(strTemp.charAt(i) == " "){
				strTemp = strTemp.substring(0, i);
			}
			else{
				break
			}
		}
	}
	
	return strTemp
}

function IsValidEmail(strEmail) {

	invalidChars = " /:,;"

	if (strEmail == "") {
		return false;
	}

	for (i=0; i<invalidChars.length; i++) {
		badChar = invalidChars.charAt(i)
		if (strEmail.indexOf(badChar,0) > -1) {
			return false;
		}
	}
		
	atPos = strEmail.indexOf("@",1)
	if (atPos == -1) {
		return false;
	}

	periodPos = strEmail.indexOf(".",atPos)
	if (periodPos == -1) {
		return false;
	}

	if (periodPos + 3 > strEmail.length) {
		return false
	}

	return true;
	
}

function PhotoWindow(ListingID, PhotoID){
	
	var posX = (screen.width / 2) - 218;
	
	window.open("listing_photo.php?l="+ ListingID +"&p="+ PhotoID, "PhotoWindow","height=380,width=436,left="+ posX +",top=100,toolbar=0,scrollbars=0,resizable=yes");
}

function SQLInjection(strText) {

	var	arrBadChars = new Array("&", "'", "\"", "+", ",", "(", ")");

	for (i=0; i < arrBadChars.length; i++) {
		if (strText.indexOf(arrBadChars[i], 0) > -1) {
			return true
			break;
		}
	}
	return false
}

/*
 IsDate Procedure
 This function determines if the date is valid and has been entered in dd/mm/yy
 form. This ensures that the date can be converted to Medium Date
 format on the server without any problems.
*/

function IsDate(strDate){

	var blnResult = true;

	// check that the string is at least 6 characters long ie. 1/1/03.		
	if (strDate.length < 6){ 
		blnResult = false;
	}
	else{
		// check that there are 3 values separated by forward slashes.
		var arrDate = strDate.split("/")
	
		if(arrDate.length != 3){ 
			blnResult = false;
		}
		else{
			// check that each of the 3 values are numeric
			for (i = 0; i <= 2; i++){
				if(isNaN(arrDate[i])){
					blnResult = false;
				}
				else{
					/*
					 check that the month (array element 1) is between 1 and 12
					 and the days (array element 0) do not exceed the number of days in the month
					 */
					if (i == 1) {	// Jan, Mar, May, July, Aug, Oct, Dec
						if (arrDate[i] == 1 || arrDate[i] == 3 || arrDate[i] == 5 || arrDate[i] == 7 ||
							arrDate[i] == 8 || arrDate[i] == 10 || arrDate[i] == 12){
							if(arrDate[0] < 1 || arrDate[0] > 31){
								blnResult = false;
							}
						}			// Apr, Jun, Sep, Nov
						else if(arrDate[i] == 4 || arrDate[i] == 6 || arrDate[i] == 9 || arrDate[i] == 11){
								if(arrDate[0] < 1 || arrDate[0] > 30){
									blnResult = false;
								}
						}
						else if (arrDate[i] == 2){ 		// Feb
							
							if (arrDate[2] % 4 == 0){ 	// leap year
								if(arrDate[0] < 1 || arrDate[0] > 29){
									blnResult = false;
								}
							}
							else{ 						// non leap year
								if(arrDate[0] < 1 || arrDate[0] > 28){
									blnResult = false;
								}
							}
						}
						else{
							blnResult = false;
						}
					}
				}
			}
		}
	}
	return blnResult;
}

function AbsolutePosition(strObjectName, strAxis){
	
	if (document.getElementById) {	//  IE 5+, NS6+, Mozilla
		obj = document.getElementById(strObjectName);
	} else if(document.all) { 
		obj = document.all.item(strObjectName);
	}
	
	var intTempPos = 0;
	
	if (strAxis.toUpperCase() == 'Y'){
		
		if (obj.offsetParent) {
			intTempPos = obj.offsetTop
			while (obj = obj.offsetParent) {
				intTempPos += obj.offsetTop
			}
		}
		
	} else if (strAxis.toUpperCase() == 'X'){
		
		if (obj.offsetParent) {
			intTempPos = obj.offsetLeft
			while (obj = obj.offsetParent) {
				intTempPos += obj.offsetLeft
			}
		}
		
	} 
	
	return intTempPos;

}

function ValidatePoll(){
	
	blnResult = false;
	
	for (i=document.frmPoll.answer_id.length-1; i > -1; i--) {
		if(document.frmPoll.answer_id[i].checked){
			blnResult = true;
		}
	}
	
	if(!blnResult){
		alert("Please select an answer before submitting your vote.");
	}
	
	return blnResult;

}
// -->