var dsi=12;


function fontPlus(){
	try{
		obj=document.getElementById("divBody");
		obj1=document.getElementById("divHeader");
		dsi+=2;
		if (dsi>20) dsi=20;
		obj.style.fontSize=dsi+"px";
		obj1.style.fontSize=dsi+"px";
		
                obj.style.lineHeight=(dsi+6)+"px";
				obj1.style.lineHeight=(dsi+6)+"px";
                
		}
	catch(ex){
		alert("error on function fontPlus "+ex.message);
		}	
	
	}
	
function fontMinus(){
	try{
		obj=document.getElementById("divBody");
		obj1=document.getElementById("divHeader");
		
		dsi-=2;
		if (dsi<10) dsi=10;
		obj.style.fontSize=dsi+"px";
		obj1.style.fontSize=dsi+"px";
                 obj.style.lineHeight=(dsi+6)+"px";
				 obj1.style.lineHeight=(dsi+6)+"px";
                
		}
	catch(ex){
		alert("error on function fontMinus "+ex.message);
		}	
	
	}