function ChangeFont(Opt) {

  

  // from here STARTS THE SETUP of default fonts sizes

  // NOTE: ALL SIZES ARE IN PIXELS

  

	if (document.getElementById("PortfolioList") == null) {

		if (document.getElementById("ListingItem") == null) {

  

  	// ========

  	// SETUP - elements for a single post or page 

  	// ========

	  	var Objs = new Array('h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'p', 'address', 'li', 'blockquote', 'pre'); // tags you want to change 

	  	var DefaultSize = new Array(30, 24, 18, 16, 14, 12, 12, 12, 12, 12, 12); // default sizes for each tag 

	  	var DefaultSizeLH = new Array(6, 6, 6, 6, 6, 6, 8, 8, 8, 8, 8); // Difference between the line-height and font-size property - theese notes are the same for each array groups

	  

  	}

	  else {

  

  	// ========

  	// SETUP - elements for a normal listing page

  	// ========



			var Objs = new Array('h1');

			var DefaultSize = new Array(30, 0);

  		var DefaultSizeLH = new Array(6, 0);  			

    		

  		var ListingObjs = new Array('h2', 'p');

  		var ListingDefaultSize = new Array(18, 12);

  		var ListingDefaultSizeLH = new Array(6, 8);    		

    		

		}

  }



  else {



	  if (cookie == 'boxbig' || cookie == 'listbig' || activeStyleSheet == 'listbig' || activeStyleSheet == 'boxbig' || (!cookie && !activeStyleSheet)) {

  

			// ========

			// SETUP - elements for a portfolio or products category / big lists

			// ========



		  var Objs = new Array('h1'); 

		  var DefaultSize = new Array(30,0); 

		  var DefaultSizeLH = new Array(6,0);    			  

		  

		  var PortfolioObjs = new Array('h1', 'h2', 'p');

		  var PortfolioDefaultSize = new Array(30, 18, 12);

		  var PortfolioDefaultSizeLH = new Array(6, 6, 8);

    		

 		}

  	else {



  		// ========

  		// SETUP - elements for a portfolio or products category / small lists

  		// ========

  

		  var Objs = new Array('h1');

		  var DefaultSize = new Array(30,0);

		  var DefaultSizeLH = new Array(6,0);   

		  	

		  var PortfolioObjs = new Array('h1', 'h2', 'p');

		  var PortfolioDefaultSize = new Array(30, 15, 11);

		  var PortfolioDefaultSizeLH = new Array(6, 6, 7);    			

  	}

  }

  

  if (document.getElementById("Description") != null) {

		

		// ========

		// SETUP - the category description element

		// ========



	  var DescObjs = new Array('span');

	  var DescDefaultSize = new Array(16,0);

	  var DescDefaultSizeLH = new Array(8,0);    		

  }

  

  // SETUP ENDS HERE



  if (Objs != null) {

 	 for (j = 0 ; j < Objs.length ; j++) {

  	ChangeFontSize(Opt, Objs[j], DefaultSize[j], DefaultSizeLH[j],"ArticleContent"); // last parameter is the id of parent object of the elements you setted up

   }

  }

    		

  if (PortfolioObjs != null) {

   for (j = 0 ; j < PortfolioObjs.length ; j++) {

   	ChangeFontSize(Opt, PortfolioObjs[j], PortfolioDefaultSize[j], PortfolioDefaultSizeLH[j], "PortfolioList");

   }    		

  }

    		

  if (DescObjs != null) {

   for (j = 0 ; j < DescObjs.length ; j++) {

   	ChangeFontSize(Opt, DescObjs[j], DescDefaultSize[j], DescDefaultSizeLH[j], "Description");

   }   

  }  	

    		

  if (ListingObjs != null) {

   for (j = 0 ; j < ListingObjs.length ; j++) {

   ChangeFontSize(Opt, ListingObjs[j], ListingDefaultSize[j], ListingDefaultSizeLH[j], "ListingList");

  }     		



 }	    		

}

    	

function ResetFontSize() {

	ChangeFont('Reset')

 }

    	

function ChangeFontSize(Opt, Obj, DefaultSize, Increment, Container) {

    	

	var container = document.getElementById(Container);

  if (container != null) {

  	

  	var Obj = container.getElementsByTagName(Obj);

    	

  	for (i = 0 ; i < Obj.length ; i++) {

    	

			if (!Obj[i].style.fontSize) {

				Obj[i].style.fontSize = DefaultSize+'px';

			}

	

			actualSize = parseInt(Obj[i].style.fontSize.replace("px",""));

			

			if (Opt == 'increase') {    	 

				newSize = actualSize+1; 

				newLineHeight = newSize+Increment;  	

				Obj[i].style.fontSize = newSize+'px';

				Obj[i].style.lineHeight = newLineHeight+'px';

			}

		

			if (Opt == 'decrease') {    	 

				newSize = actualSize-1;   

				newLineHeight = newSize+Increment; 	

			  Obj[i].style.fontSize = newSize+'px';

			  Obj[i].style.lineHeight = newLineHeight+'px';

			 }

		    	

			if (Opt == 'Reset' || Opt == 'default') {    	 

				newSize = '';   

				newLineHeight = ''; 	

				Obj[i].style.fontSize = newSize;

				Obj[i].style.lineHeight = newLineHeight;

			}    	

	

		} // for ends here

	}

}