// JavaScript Document
// General javascript procs for BHSL web site. Swapimanges, ShowHide, etc.

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) { //v4.01
  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);
  if(!x && d.getElementById) x=d.getElementById(n); 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 MM_nbGroup(event, grpName) { //v6.0
  var i,img,nbArr,args=MM_nbGroup.arguments;
  if (event == "init" && args.length > 2) {
    if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
        if (!img.MM_up) img.MM_up = img.src;
        img.src = img.MM_dn = args[i+1];
        nbArr[nbArr.length] = img;
    } }
  } else if (event == "over") {
    document.MM_nbOver = nbArr = new Array();
    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : ((args[i+1])? args[i+1] : img.MM_up);
      nbArr[nbArr.length] = img;
    }
  } else if (event == "out" ) {
    for (i=0; i < document.MM_nbOver.length; i++) {
      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }
  } else if (event == "down") {
    nbArr = document[grpName];
    if (nbArr)
      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = img.MM_dn = (args[i+1])? args[i+1] : img.MM_up;
      nbArr[nbArr.length] = img;
  } }
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

function jumpPage(newLoc) {
	newPage=newLoc.options[newLoc.selectedIndex].value
	if (newPage != "") {
		window.location.href = newPage
	}
}

//************************************************************************************************
// showHide
//   This function makes the div with id="id" visible (display: ''), 
//      and all other divs with class="name" are hidden (display:'none')
//
//************************************************************************************************
function showHide(id, name){
	if (document.getElementById(id).style.display=="") {
	   document.getElementById(id).style.display = "none";
	   //reset default paragraph to display
	   document.getElementById('default').style.display = "";
	   return;
  	}
	
	subs_array = document.getElementsByTagName('div');
	for (i=0;i<subs_array.length;i++){
		if (subs_array[i].className == name) {
			subs_array[i].style.display = "none";
		}
	}

	document.getElementById(id).style.display = "";
	return;
}



//************************************************************************************************
// callShow
//   This function is called by pages that generate dynamic lists based on WebResources
//		(including DBs and EBs) to determine which find_XXX function to call based on the
//      option selected
//
//************************************************************************************************
function callShow(field_value, caller) {
// gets passed a field and value combination separated by a "/"; parses out each value; and then
// calls the appropriate find_XXX procedure.
	var slashPos = field_value.indexOf("/");
	
	field1 = field_value.slice(0, slashPos);
	valu1 = field_value.slice(slashPos+1);
	
	if (field1 == '0')
		//do nothing
		return;
	else {
		if (field1 == 'beginLett') {
			url = 'http://webcomm.bcd.tamhsc.edu/library/ConsHXML/ConsH_XML.html?b&' + valu1;
			window.location.href = url;
		}
		if (field1 == 'catalog')
			window.location.replace("https://voyager-bc.tamu.edu/cgi-bin/Pwebrecon.cgi?Search%5FArg=consumer%20health&SL=None&Search%5FCode=SUBJ%5F&CNT=50&BROWSE=1&HC=13");
		else if (field1 == 'resc_type') {
			if (valu1 == 'DB')
				find_DBs("subject", "http://webcomm.bcd.tamhsc.edu/library/DBsXML/Consumer");
			else if (valu1 == 'EB')
				find_ebooks("subject", "http://webcomm.bcd.tamhsc.edu/library/EbooksXML/Consumer");
		}
		else {
			if (caller == 'ConsH') {
				if (field1 == 'language') {
					url = 'http://webcomm.bcd.tamhsc.edu/library/ConsHXML/ConsH_XML.html?l&' + valu1;
					window.location.href = url;
				}
				
				else {
				//find_WEBs(field1, valu1, 'resc_type', 'Consumer Health');
				url = 'http://webcomm.bcd.tamhsc.edu/library/ConsHXML/ConsH_XML.html?s&' + valu1;
				window.location.href = url;
				}
			}
			
			else if (caller == 'SubjGd') {
				document.getElementById('EB_Subject').selectedIndex = 0;
				
				url = 'http://webcomm.bcd.tamhsc.edu/library/SubjGdXML/Subjs_XML-2.php?' + valu1;
				window.location.href = url;
			}
			else if (caller == 'index') {
				document.getElementById('QM_Subject').selectedIndex = 0;
				
				url = 'http://webcomm.bcd.tamhsc.edu/library/SubjGdXML/Subjs_XML-2.php?' + valu1;
				window.location.href = url;
			}
		}
	}
}


function insertRqst (value) {
//alert("insertRqst");

	url = 'http://' + location.hostname + location.pathname + '?pg=' + value;
	window.location.href = url;
}