//Custom JavaScript Functions by Shawn Olson
//Copyright 2006-2008
//http://www.shawnolson.net
//If you copy any functions from this page into your scripts, you must provide credit to Shawn Olson & http://www.shawnolson.net
//*******************************************

function changecss(theClass,element,value) {
	//Last Updated on June 23, 2009
	//documentation for this script at
	//http://www.shawnolson.net/a/503/altering-css-class-attributes-with-javascript.html
	 var cssRules;

	 var added = false;
	 for (var S = 0; S < document.styleSheets.length; S++){

    if (document.styleSheets[S]['rules']) {
	  cssRules = 'rules';
	 } else if (document.styleSheets[S]['cssRules']) {
	  cssRules = 'cssRules';
	 } else {
	  //no rules found... browser unknown
	 }

	  for (var R = 0; R < document.styleSheets[S][cssRules].length; R++) {
	   if (document.styleSheets[S][cssRules][R].selectorText == theClass) {
	    if(document.styleSheets[S][cssRules][R].style[element]){
	    document.styleSheets[S][cssRules][R].style[element] = value;
	    added=true;
		break;
	    }
	   }
	  }
	  if(!added){
	  if(document.styleSheets[S].insertRule){
			  document.styleSheets[S].insertRule(theClass+' { '+element+': '+value+'; }',document.styleSheets[S][cssRules].length);
			} else if (document.styleSheets[S].addRule) {
				document.styleSheets[S].addRule(theClass,element+': '+value+';');
			}
	  }
	 }
}

	function changeImgSize(objectId,newWidth,newHeight) {
	  imgString = 'theImg = document.getElementById("'+objectId+'")';
	  eval(imgString);
	  oldWidth = theImg.width;
	  oldHeight = theImg.height;
	  if(newWidth>0){
	   theImg.width = newWidth;
	  }
	  if(newHeight>0){
	   theImg.height = newHeight;
	  }

	}

	function changeColor(theObj,newColor){
	  eval('var theObject = document.getElementById("'+theObj+'")');
	  if(theObject.style.backgroundColor==null){theBG='white';}else{theBG=theObject.style.backgroundColor;}
	  if(theObject.style.color==null){theColor='black';}else{theColor=theObject.style.color;}
	  //alert(theObject.style.color+' '+theObject.style.backgroundColor);
      switch(theColor){
	    case newColor:
		  switch(theBG){
			case 'white':
		      theObject.style.color = 'black';
		    break;
			case 'black':
			  theObject.style.color = 'white';
			  break;
			default:
			  theObject.style.color = 'black';
			  break;
		  }
		  break;
	    default:
		  theObject.style.color = newColor;
		  break;
	  }
	}