//  Commonly used functions for Javascript
//  By Joel Bauca
var errhnd=false
function seekVal(to,val){
  for (ctr1=0;ctr1<to.options.length;ctr1++){
	 if(to.options[ctr1].value==val){
		to.options[ctr1].selected=true;
		break;
	 }
  } 
}
function IsInt(iobj){ //Integer Validation
   var myString = iobj
   var inThere = myString.match(/^(\d)+$/g)
   if (inThere) 
      return true //Invalid number
   return false //Valid Number
}
function IsFloat(iobj){ //Float Validation
   var myString = iobj
   var inThere = myString.match(/^(\d)+\.\d{1,2}$/g)
   if (inThere) 
      return true //Invalid number
   return false //Valid Number
}
function IsColor(iobj){ //Color Validation
   var myString = iobj
   var inThere = myString.match(/\#([0-9a-fA-F]){6}/g)
   if (inThere) {
	  return true //Valid Color
   }
   return false //Invalid Color
}
function IsEmail(ieobj){//Email Validation
   var estr = ieobj          
   var eres = estr.match(/^(\s)*[_a-z0-9A-Z-]+(\.[_a-z0-9A-Z-]+)*@[a-z0-9A-Z-]+(\.[a-z0-9A-Z-]+)+$/g)
   if (eres)
	  return true  //Valid Email
   return false  //Invalid Email
}
function IsNull(obj){ //Null Validation
   var myString = obj
   var inThere = myString.match(/\S/g)
   if (inThere) 
	  return false //Invalid number
   return true //Valid Number
}
 
function IsDate(dateStr){
    var datePat = /^(\d{4})(\/|-)(\d{1,2})(\/|-)(\d{1,2})$/; //Y-m-d
    var matchArray = dateStr.match(datePat); // is the format ok?
    var monthname=""
    if (matchArray == null) 
        return false;

    month = matchArray[3]; // parse date into variables
    day = matchArray[5];
    year = matchArray[1];
	
    if (year<1900)
	   return false;
	if (year>2500)
	   return false;
    if (month < 1 || month > 12)  // check month range
        return false;

    if (day < 1 || day > 31)
        return false;
		
	if (month == 2)monthname="February";
	else if (month == 4)monthname="April";
	else if (month == 6)monthname="June";
	else if (month == 9)monthname="September";
	else if (month == 11)monthname="November";

    if ((month==4 || month==6 || month==9 || month==11) && day==31) 
        return false;

    if (month == 2) { // check for february 29th
        var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
        if (day > 29 || (day==29 && !isleap)) 
            return false;
    }
    return true; // date is valid
}
function DateDiff(date1,date2){ //from,to
 
    var datePat = /^(\d{1,2})(\/|-)(\d{1,2})(\/|-)(\d{4})$/; //Y-m-d
    var datePat = /^(\d{4})(\/|-)(\d{1,2})(\/|-)(\d{1,2})$/; //Y-m-d
    var matchArray1 = date1.match(datePat); // is the format ok?
    var matchArray2 = date2.match(datePat); // is the format ok?

    mm1 = matchArray1[3]; // parse date into variables
    dd1 = matchArray1[5];
    yy1 = 20 + matchArray1[1];
    mm2 = matchArray2[3]; // parse date into variables
    dd2 = matchArray2[5];
    yy2 = 20 + matchArray2[1];
    var dat2 = new Date(mm2 + "/" + dd2 +"/" + yy2)
    var dat1 = new Date(mm1 + "/" + dd1 +"/" + yy1)
	var diff = new Date()
	diff=dat2.getTime() - dat1.getTime();
    days = Math.floor(diff / (1000 * 60 * 60 * 24)); 
	return days
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}
function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function delrec(a,xm,f,act){
   if (delrec!=""){
      if(xm==null)
	     xm = "Do you really want to delete this record?"
      if(confirm(xm)){
		  if(f!=null)
			 document.form1.func.value=f
		  if(act!=null)
			 document.form1.action=act
	     document.form1.delid.value=a
		 document.form1.method="POST"
		 document.form1.submit()
	  }
   }
}
function str_replace(string,text,by) {
// Replaces text with by in string
    var strLength = string.length, txtLength = text.length;
    if ((strLength == 0) || (txtLength == 0)) return string;

    var i = string.indexOf(text);
    if ((!i) && (text != string.substring(0,txtLength))) return string;
    if (i == -1) return string;

    var newstr = string.substring(0,i) + by;

    if (i+txtLength < strLength)
        newstr += str_replace(string.substring(i+txtLength,strLength),text,by);

    return newstr;
}
function opennewwindow(mypage,h,w,n,winname){
  if ((IsNull(h)) || (IsNull(w)) || (IsNull(n)) || (!IsInt(h)) || (!IsInt(w)) || ((n!="no")&&(n!="yes")))
     prpty=""
  else {
     locx = (screen.width - w)/2; 
     locy = (screen.height - h)/2; 
     prpty="status=yes,resizable=no,height="+h+",width="+w+",left="+locx+",top="+locy+",menubar=no,toolbar=no,scrollbars=" + n
  }
  if (IsNull(winname))
     wn = null
  else
     wn = winname
  if (!IsNull(mypage)){	 
	 mywin =  window.open(mypage,wn,prpty)
	 mywin.focus()
  }
}
function setOrder(a,b){
   document.form1.method="post"
   document.form1.ord.value=a
   document.form1.so.value=b
   document.form1.submit()
}
function setPage(a){
   document.form1.method="post"
   document.form1.ts.value=a
   document.form1.submit()
}

function IntKeypress(){
	var string="1234567890";
	if (string.indexOf(unescape('%' + window.event.keyCode.toString(16))) != -1) 
		window.event.returnValue = true;
	else
		window.event.returnValue = false;
}
function FloatKeypress(){
	var string="1234567890.";
	if (string.indexOf(unescape('%' + window.event.keyCode.toString(16))) != -1) 
		window.event.returnValue = true;
	else
		window.event.returnValue = false;
}
function displayAlert() {   
	 errhnd=false
 }   
function displayerror(){
	errhnd=true
}
function testimage(J){
	errhnd=false
	imageA = new Image(100,100)
	imageA.onload=displayAlert
	imageA.onerror=displayerror
	imageA.src=J
}
function chkimg(imgname,nnflag,noneflag){
var imgsrc,imgold,uploadpath,nflag,nopic
    tf = document.form1
    uploadpath = tf.uploadpath.value
	nopic = tf.nopic.value
	imgsrc = document.getElementById(imgname).value
	imgold = document.getElementById("h"+imgname).value
	if (noneflag=="1"){
	   if (document.getElementById("n"+imgname).checked==true){	
	      imgsrc=""
		  if (nnflag=='1'){
			  alert('Invalid Image File!')
			  errhnd=true
			  return false
		  }
	      document.images["d"+imgname].src=uploadpath+nopic
		  return false
	   }
	}
    if(IsNull(imgsrc)){
	   if ((nnflag=='1')&&(imgold==nopic)){
		  alert('Invalid Image File!')
		  errhnd=true
		  return false
	   }
	   if (imgold==nopic)
		  document.getElementById("n"+imgname).checked=true
	   document.images["d"+imgname].src=uploadpath+imgold
	   return false
	}
    else {
	    imgsrc = "file:///" + str_replace(imgsrc,"\\","/")
		ext=imgsrc.substr(imgsrc.lastIndexOf(".")+1)
		if ((ext.toUpperCase()!="JPG") && (ext.toUpperCase()!="JPE") && (ext.toUpperCase()!="JPEG") && (ext.toUpperCase()!="GIF") && (ext.toUpperCase()!="PNG")){
	       alert('Invalid Image File!')
	       errhnd=true
		   return false
		}	
        testimage(imgsrc)
	    if (errhnd) {
	       alert('Invalid Image File!')
	       errhnd=true
		   return false
	    }
		else {
	       document.images["d"+imgname].src=imgsrc
		   document.getElementById("n"+imgname).checked=false
		   return false
		}
    }   
}