I had the same problem a while ago ...
Try adjusting the contents of the text area from the init_instance_callback parameter in the init parameters:
init_instance_callback : function() { tinyMCE.activeEditor.setContent('Cust Details'); }
Using this piece of code should look something like this:
$(function() { appendTinyMCE(); function appendTinyMCE(){ tinyMCE.init({ // General options mode : "textareas", theme : "advanced", plugins : "preview", // Theme options theme_advanced_buttons1 : "forecolor,backcolor,|,justifyleft,justifycenter,justifyright,justifyfull,|,bullist,numlist,|,formatselect,fontselect,fontsizeselect,sub,sup,|,bold,italic,underline,strikethrough", theme_advanced_buttons2 : "", theme_advanced_buttons3 : "", width : "640", theme_advanced_toolbar_location : "top", theme_advanced_toolbar_align : "left", theme_advanced_statusbar_location : "bottom", theme_advanced_resizing : true, init_instance_callback : function() { tinyMCE.activeEditor.setContent('Cust Details');} });} });
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